SAS 认证
SAS认证考试流程
SAS认证考试流程考试时间：基本上每个工作日都可以机考，但最好至少提前一周预约，以免仓促；考试地点：绝大部分国内省会城市有考点。
2010年苏州的SAS考点位于干将西路515号佳福大厦1008室SODI Training Center（具体地点详见预约注册网站，每年的考点可能会有变动）；考试费用：目前BASE和Advance考试都是115美元，必须通过信用卡(VISA)即可付款。
对高校师生，实行50%的优惠价为77.05美元(人民币500元左右)，但需要提前用Email发送学生证扫描件到certification@。
对方如果确认（一般3天左右即可收到答复），会回复一个优惠密码，在预约时填写（优惠码的有效期是3个月，过期后需再次索取）。
考试预约网站：/home.asp?page_id=0（中文站点）考试成绩及证书发布：整个机考时间大约是一个半小时，可提前交卷，试卷提交成功后，考点即刻可将成绩单打印出来，并加盖考点钢印。
及格线为60分，一般半个月左右即可收到SAS公司通过Email传送过来的PDF格式的认证证书（以前有纸制证书，但近几年SAS以环保为由，拒绝颁发纸制证书）。
在收到证书的前后几天，即可在SAS官网上查询到自己的名字和所通过的考试项目：/certify/directory/index.hsql几点注意事项：1. 必须先通过BASE，才可报考Advance；2. 网上报名成功后，最好能给考点事先打个电话确认一下。
另外，最好能提前半个小时到达考点，因为考点需要些时间从SAS公司下载考题；2. 人大经济论坛SAS专区有完整的考证资料（包括Online教程，50+70+123题，以及真题），该论坛上有很多通过SAS BASE和ADV的考友分享的经验和资料；SAS讨论区：/forum-68-1.htmlSAS资料下载区：/forum-219-1.html3. 初级证书和高级证书考试实际上都不考统计具体应用的部分，比如，不会考回归怎么应用，更不会考多层分析或者结构方程怎么应用，具体考试范围在论坛上可见；4. SAS认证所需的资料人大经济论坛SAS专区基本都有，但特别推荐的备考必读材料是SAS Programming I、II、III，通过下面的链接可免费下载：/thread-827726-1-1.html。
sas base认证考试经验
现实意义：应用行业及职业前景
SAS全球专业认证是国际上公认的数据挖掘和商业 智能（Business Intelligence，BI）领域的权威认 证，随着我国IT环境和应用的日渐成熟，以上两个 领域将有极大的行业发展空间。获取SAS全球专业 认证，有利于在数据挖掘、分析方法论领域积累丰 富经验奠定良好的基础，帮助开辟职业发展的新天 地。
网上他人的备考经验
• /thread-1542637-1-1.html • /link?url=92ujrBPEqSQfJ UMW3KVdhHHR8Kwpny0n5jha8YzVQ_BheG3 U1wxYVlqJtnLlZgHsC4W0Onq58LRYRSmt5nS FP7U8_UnIte9TtMuBbfDCau3 • /link?url=mUHczyr9rRDU N_s4UUL_EfobGZQmqfLil2r1vv6KxnJbhFYImke EH6qSbrysglreg3H5GFpmQHIMyO0F3bZ9w_A 3wu8bQCeCjc5TWr93AJ3
例子：职位搜索
例子：银行工作
例子
意义：电子商务
意义：电子商务
什么是SAS认证
• SAS中国认证面向广大就业学生，设立五个 角色的定位：
– SAS程序员 – SAS业务分析师 – SAS数据挖掘 – SAS系统开发专家 – SAS系统管理专家
• SAS认证是使用SAS软件技能水平的证明 （当然，对于中国考生这句话得case by case）
SAS认证考试
经验分享 TJgwYLY
官方：
SAS认证是SAS 公司根据众多大型企业尤其 是金融企业的实际用人需求，参照SAS全球认证体 系标准，专门针对企业的实际情况设计的一套SAS 软件应用技能认证体系，SAS认证证书代表着获证 人员的SAS软件实际应用水平，对企业选人、用人 具有重要指导意义。
SAS认证考试(官方练习题集和校正答案)
1. A raw data file is listedbelow.The following program issubmitted using this file asinput:data work.family;infile 'file-specification';<insert INPUTstatement here>run;Which INPUT statementcorrectly reads the values forthe variable Birthdate asSAS date values?a.input relation$ first_name$ birthdate date9.;b.input relation$ first_name$ birthdatemmddyy8.;c.input relation$ first_name$ birthdate :date9.;d.input relation$ first_name$ birthdate :mmddyy8.;Correct answer: dAn informat is used to translate the calendar date to a SAS datevalue. The date values are in the form of two-digit values formonth-day-year, so the MMDDYY8. informat must be used.When using an informat with list input, the colon-formatmodifier is required to correctly associate the informat with thevariable name.You can learn about•informats in Reading Date and Time Values•the colon-format modifier in Reading Free-FormatData.2. A raw data file is listed below.1---+----10---+----20---+---Jose,47,210Sue,,108The following SAS program is submitted using the raw data fileabove as input:data employeestats;<insert INFILE statement here>input name $ age weight;run;The following output is desired:name age weightJose47210Sue.108Which of the following INFILE statements completes theprogram and accesses the data correctly?a.infile 'file-specification' pad;b.infile 'file-specification' dsd;c.infile 'file-specification' dlm=',';d.infile 'file-specification' missover;Correct answer: bThe PAD option specifies that SAS pad variable length recordswith blanks. The MISSOVER option prevents SAS fromreading past the end of the line when reading free formatteddata. The DLM= option specifies the comma as the delimiter;however, consecutive delimiters are treated as one by default.The DSD option correctly reads the data with commas asdelimiters and two consecutive commas indicating a missingvalue like those in this raw data file.You can learn about•the PAD option in Reading Raw Data in Fixed Fields•the MISSOVER option in Creating MultipleObservations from a Single Record•the DLM= option and the DSD option in Reading Free-Format Data.3. The following program is submitted:data numrecords;infile cards dlm=',';input agent1 $ agent2 $ agent3 $;cards;jones,,brownjones,spencer,brown;run;What is the value for the variable named Agent2 in the secondobservation?a.Brownb.Spencerc.' ' (missing character value)d.There is no value because only one observation iscreated.Correct answer: dThe CARDS statement enables you to read instream data. Anynumber of consecutive commas are considered to be a singledelimiter as a result of the DLM= option, and the length of eachvariable defaults to 8 bytes. Therefore, the values jones,brownjon, and spencer are assigned to Agent1, Agent2, andAgent3, respectively, for the first observation. The rest of thedata on the record is not read by the INPUT statement and is notoutput to the data set.You can learn about•the CARDS statement in Creating SAS Data Sets fromRaw Data•the default length of variables in Reading Free-FormatData.4. A raw data file is listed below.1---+----10---+----20---+----30---+----40---+----50TWOSTORY 1040 2 1SANDERS ROAD $55,850CONDO 2150 4 2.5JEANS AVENUE $127,150The following program is submitted using this file as input:data work.houses;infile 'file-specification';<insert INPUT statement here>run;Which one of the following INPUT statements reads the rawdata file correctly?a.input @1 style $8.+1 sqfeet 4.+1 bedrooms 1.@20 baths 3.street 16.@40 price dollar8;b.input @1 style $8+1 sqfeet 4.+1 bedrooms 1.@20 baths 3.street $16@40 price dollar8.;c.input @1 style $8.+1 sqfeet 4.+1 bedrooms 1.@20 baths 3.street $16.@40 price dollar8.;d.input @1 style $8.+1 sqfeet 4.+1 bedrooms 1.@20 baths 3street 16.@40 price dollar8.;Correct answer: cFormatted input requires periods as part of the informat name.The period is missing from the variables Style and Street inAnswer b, the variable Baths in Answer d, and the variablePrice in Answer a (which is also missing a dollar sign to readthe variable Street as a character value).You can learn about formatted input and informats in ReadingRaw Data in Fixed Fields.5. The following SAS program is submitted at the start of a newSAS session:libname sasdata 'SAS-data-library';data sasdata.sales;set sasdata.salesdata;profit=expenses-revenues;run;proc print data=sales;run;The SAS data set Sasdata.Salesdata has ten observations.Which one of the following explains why a report fails togenerate?a.The DATA step fails execution.b.The SAS data set Sales does not exist.c.The SAS data set Sales has no observations.d.The PRINT procedure contains a syntax error.Correct answer: bThe DATA step creates a permanent SAS data set,Sasdata.Salesdata. The PRINT procedure is printing atemporary SAS data set, Sales, that is stored in the Worklibrary. At the beginning of the SAS session, Work.Sales doesnot exist.You can learn about•creating permanent data sets with the DATA step inCreating SAS Data Sets from Raw Data•temporary data sets in Basic Concepts.6. Which action assigns a reference named SALES to a permanentSAS data library?a.Issuing the command:libref SALES 'SAS-data-library'b.Issuing the command:libname SALES 'SAS-data-library'c.Submitting the statement:libref SALES 'SAS-data-library';d.Submitting the statement:libname SALES 'SAS-data-library';Correct answer: dThe LIBNAME statement assigns a reference known as a librefto a permanent SAS data library. The LIBNAME commandopens the LIBNAME window.You can learn about the LIBNAME statement in ReferencingFiles and Setting Options.7. The following SAS program is submitted:data newstaff;set staff;<insert WHERE statement here>run;Which one of the following WHERE statements completes theprogram and selects only observations with a Hire_date ofFebruary 23, 2000?a.where hire_date='23feb2000'd;b.where hire_date='23feb2000';c.where hire_date='02/23/2000'd;d.where hire_date='02/23/2000';Correct answer: aA SAS date constant must take the form of one- or two-digitday, three-digit month, and two- or four-digit year, enclosed inquotation marks and followed by a d ('ddmmmyy<yy>'d).You can learn about SAS date constants in Creating SAS DataSets from Raw Data.8. Which one of the following SAS date formats displays the SASdate value for January 16, 2002 in the form of 16/01/2002?a.DATE10.b.DDMMYY10.c.WEEKDATE10.d.DDMMYYYY10.Correct answer: bThe requested output is in day-month-year order and is 10 byteslong, so DDMMYY10. is the correct format. AlthoughWEEKDATE10. is a valid SAS format, it does not display theSAS date value as shown in the question above.DDMMYYYY10. is not a valid SAS date format, and theDATE w. format cannot accept a length of 10.You can learn about•the DDMMYY10. format in Creating List Reports•the WEEKDATE10. format in Reading Date and TimeValues.9. Which one of the following displays the contents of an externalfile from within a SAS session?a.the LIST procedureb.the PRINT procedurec.the FSLIST procedured.the VIEWTABLE windowCorrect answer: cThe PRINT procedure and VIEWTABLE window display thevalues in SAS data sets. The FSLIST procedure displays thevalues in external files. There is no LIST procedure in SAS.You can learn about•the PRINT procedure in Creating List Reports•the VIEWTABLE window in Referencing Files andSetting Options.10. The SAS data set Sashelp.Prdsale contains the variablesRegion and Salary with 4 observations per Region.Sashelp.Prdsale is sorted primarily by Region and withinRegion by Salary in descending order.The following program is submitted:data one;set sashelp.prdsale;retain temp;by region descending salary;if first.region thendo;temp=salary;output;end;if last.region thendo;range=salary-temp;output;end;run;For each region, what is the number of observation(s) written tothe output data set?a.0b.1c. 2d.4Correct answer: cThe expression first.region is true once for each regiongroup. The expression last.region is true once for each regiongroup. Therefore, each OUTPUT statement executes once for atotal of 2 observations in the output data set.You can learn about the FIRST.variable expression and theOUTPUT statement in Reading SAS Data Sets.11. The following SAS program is submitted:proc contents data=sasuser.houses;run;The exhibit below contains partial output produced by theCONTENTS procedure.Data Set Name SASUSER.HOUSES Observations15Member Type DATA Variables6Engine V9Indexes0Created Tuesday, April 22,2003 03:09:25 PMObservationLength56Last Modified Tuesday, April 22,2003 03:09:25 PMDeletedObservationsProtection Compressed NO Data Set Type Sorted NOLabel Residential housing for saleDataRepresentationWINDOWS_32Encoding wlatin1 Western (Windows)Which of the following describes the Sasuser.Houses data set?a.The data set is sorted but not indexed.b.The data set is both sorted and indexed.c.The data set is not sorted but is indexed.d.The data set is neither sorted nor indexed.Correct answer: dThe exhibit above shows partial output from the CONTENTSprocedure, In the top right-hand column of the output, you seethat Indexes has a value of 0, which indicates that no indexesexist for this data set. Also, Sorted has a value of NO, whichindicates that the data is not sorted.You can learn about the CONTENTS procedure in ReferencingFiles and Setting Options.12. The following SAS program is submitted:proc sort data=work.test;by fname descending salary;run;Which one of the following represents how the observations aresorted?a.The data set Work.Test is stored in ascending order byboth Fname and Salary values.b.The data set Work.Test is stored in descending order byboth Fname and Salary values.c.The data set Work.Test is stored in descending order byFname and ascending order by Salary values.d.The data set Work.Test is stored in ascending order byFname and in descending order by Salary values.Correct answer: dThe DESCENDING keyword is placed before the variable nameit modifies in the BY statement, so the correct description is indescending order by Salary value within ascending Fnamevalues.You can learn about the SORT procedure and theDESCENDING keyword in Creating List Reports.13. The following SAS program is submitted:data names;title='EDU';if title='EDU' thenDivision='Education';else if title='HR' thenDivision='Human Resources';else Division='Unknown';run;Which one of the following represents the value of the variableDivision in the output data set?catiocationc.Human Red.Human ResourcesCorrect answer: bThe length of the variable Division is set to 9 when the DATAstep compiles. Since the value of the variable Title is EDU, thefirst IF condition is true; therefore, the value of the variableDivision is Education.You can learn about•the length of a variable in Understanding DATA StepProcessing•IF-THEN statements in Creating and ManagingVariables.14. Which one of the following SAS programs creates a variablenamed City with a value of Chicago?a.data work.airports;AirportCode='ord';if AirportCode='ORD' City='Chicago';run;b.data work.airports;AirportCode='ORD';if AirportCode='ORD' City='Chicago';run;c.data work.airports;AirportCode='ORD';if AirportCode='ORD' then City='Chicago';run;d.data work.airports;AirportCode='ORD';if AirportCode='ORD';then City='Chicago';run;Correct answer: cThe correct syntax for an IF-THEN statement is: IF expressionTHEN statement;In this example, the variable City is assigned a value ofChicago only if the expression AirportCode='ORD' is true.You can learn about IF-THEN statements in Creating andManaging Variables.15. The following SAS program is submitted:data work.building;code='DAL523';code='SANFRAN604';code='HOUS731';length code $ 20;run;Which one of the following is the length of the code variable?a.6b.7c.10d.20Correct answer: aThe DATA step first goes through a compilation phase, then anexecution phase. The length of a variable is set during thecompilation phase and is based on the first time the variable isencountered. In this case, the variable code is set to the lengthof the text string DAL523 which is 6 characters long. The nextassignment statements are ignored during compilation. TheLENGTH statement is also ignored since the length has alreadybeen established, but a note will be written to the log.You can learn about•the compilation phase of the DATA step inUnderstanding DATA Step Processing•the LENGTH statement in Creating and ManagingVariables.16. Which of the following statements creates a numeric variablenamed IDnumber with a value of 4198?a.IDnumber=4198;b.IDnumber='4198';c.length IDnumber=8;d.length IDnumber $ 8;Correct answer: aThe first reference to the SAS variable in the DATA step setsthe name, type, and length of the variable in the program datavector (PDV) and in the output SAS data set. The assignmentstatement IDnumber=4198; is the first reference and creates anumeric variable named IDnumber with a default storage lengthof 8 bytes.You can learn about•creating variables in the DATA step in UnderstandingDATA Step Processing•numeric variables in Basic Concepts.17. The following program is submitted:data fltaten;input jobcode $ salary name $;cards;FLAT1 70000 BobFLAT2 60000 JoeFLAT3 30000 Ann;run;data desc;set fltaten;if salary>60000 then description='Over 60';else description='Under 60';run;What is value of the variable named description when thevalue for salary is 30000?a.Under 6b.Under 60c.Over 60d.' ' (missing character value)Correct answer: aThe variable description is being created by the IF-THEN/ELSE statement during compilation. The first occurrenceof the variable description is on the IF statement, and since itis assigned the value Over 60, the length of the variable is 7.Therefore, for the salary value of 30000, description has thevalue of Under 6 (the 0 is truncated.)You can learn about•the compilation phase of the DATA step inUnderstanding DATA Step Processing•IF-THEN/ELSE statements in Creating and ManagingVariables.18. A raw data file is listed below.1---+----10---+----20---+---102320The following program is submitted:data all_sales;infile 'file-specification';input receipts;<insert statement(s) here>run;Which statement(s) complete(s) the program and produce(s) arunning total of the Receipts variable?a.total+receipts;b.total 0;sum total;c.total=total+receipts;d.total=sum(total,receipts);Correct answer: aThe SUM function and the assignment statement do not retainvalues across iterations of the DATA step. The sum statementtotal+receipts; initializes total to 0, ignores missing valuesof receipt, retains the value of total from one iteration to thenext, and adds the value of receipts to total.You can learn about the sum statement in Creating andManaging Variables.19. A raw data file is listed below.1---+----10---+----20---+---1901 21905 11910 61925 11941 1The following SAS program is submitted and references the rawdata file above:data money;infile 'file-specification';input year quantity;total=total+quantity;What is the value of total when the data step finishesexecuting?a.0b.1c.11d. . (missing numeric value)Correct answer: dThe variable Total is assigned a missing value during thecompilation phase of the DATA step. When the first record isread in, SAS processes: total=.+2; which results in a missingvalue. Therefore the variable Total remains missing for allobservations.You can learn about•the compilation phase of the DATA step inUnderstanding DATA Step Processing•using missing values with arithmetic operators inCreating SAS Data Sets from Raw Data.20. The following program is submitted:data test;average=mean(6,4,.,2);run;What is the value of average?a.0b.3c.4d. . (missing numeric value)Correct answer: cThe MEAN function adds all of the non-missing values anddivides by the number of non-missing values. In this case, 6 + 4+ 2 divided by 3 is 4.You can learn about the MEAN function in Transforming Datawith SAS Functions.21. The following SAS program is submitted:data work.AreaCodes;Phonenumber=3125551212;Code='('!!substr(Phonenumber,1,3)!!')';run;Which one of the following is the value of the variable Code inthe output data set?a.( 3)b.(312)c.3d.312Correct answer: aAn automatic data conversion is performed whenever a numericvariable is used where SAS expects a character value. Thenumeric variable is written with the BEST12. format and theresulting character value is right-aligned when the conversionoccurs. In this example, the value of Phonenumber is convertedto character and right-aligned before the SUBSTR function isperformed. Since there are only 10 digits in the value ofPhonenumber, the right-aligned value begins with two blanks.Therefore the SUBSTR function picks up two blanks and a 3,and uses the BEST12. format to assign that value to Code. Then,the parentheses are concatenated before and after the two blanksand a 3.You can learn about automatic data conversion and theSUBSTR function in Transforming Data with SAS Functions.22. The following SAS program is submitted:data work.inventory;products=7;do until (products gt 6);products+1;end;run;Which one of the following is the value of the variableproducts in the output data set?a.5b.6c.7d.8Correct answer: dA DO UNTIL loop always executes at least once because thecondition is not evaluated until the bottom of the loop. In theSAS program above, the value of Products is incremented from7 to 8 on the first iteration of the DO UNTIL loop, before thecondition is checked. Therefore the value of Products is 8.You can learn about DO UNTIL loops in Generating Datawith DO Loops.23. The following program is submitted:data work.test;set work.staff (keep=salary1 salary2 salary3);<insert ARRAY statement here>run;Which ARRAY statement completes the program and createsnew variables?a.array salary{3};b.array new_salary{3};c.array salary{3} salary1-salary3;d.array new_salary{3} salary1-salary3;Correct answer: bAlthough each of the ARRAY statements listed above is a validstatement, only Answer B creates new variables namednew_salary1, new_salary2 and new_salary3. Answer C andAnswer D both create an array that groups the existing data setvariables salary1, salary2, and salary3. Since the array inAnswer A is named salary, it also uses the existing data setvariables.You can learn about creating new variables in an ARRAYstatement in Processing Variables with Arrays.24. Which of the following permanently associates a format with avariable?a.the FORMAT procedureb.a FORMAT statement in a DATA stepc.an INPUT function with format modifiersd.an INPUT statement with formatted style inputCorrect answer: bTo permanently associate a format with a variable, you use theFORMAT statement in a DATA step. You can use theFORMAT procedure to create a user-defined format. You usethe INPUT function to convert character data values to numericvalues with an informat. You use the INPUT statement to readdata into a data set with an informat.You can learn about•permanently assigning a format to a variable in Creatingand Managing Variables•the FORMAT statement in Creating List Reports•the FORMAT procedure in Creating and ApplyingUser-Defined Formats•the INPUT function in Transforming Data with SASFunctions•the INPUT statement in Reading Raw Data in FixedFields.25. The following report is generated:Which of the following steps created the report?a.proc freq data=sasuser.houses;tables style price /nocum;format price dollar10.;label style="Style of homes"price="Asking price";run;b.proc print data=sasuser.houses;class style;var price;table style,n price*mean*f=dollar10.;label style="Style of homes"price="Asking price";run;c.proc means data=sasuser.houses n mean;class style;var price;format price dollar10.;label style="Style of homes"price="Asking price";run;d.proc report data=sasuser.houses nowd headline;column style n price;define style / group "Style of homes";define price / mean format=dollar8."Asking price";run;Correct answer: dThe FREQ procedure cannot create the average asking price.The CLASS statement and the VAR statement are not valid foruse with the PRINT procedure. The MEANS procedure outputwould have both the N statistic and the N Obs statistic since aCLASS statement is used. The REPORT procedure producedYou can learn about•the FREQ procedure in Producing DescriptiveStatistics•the PRINT procedure in Creating List Reports•the MEANS procedure in Producing DescriptiveStatistics•the REPORT procedure in Creating Enhanced List andSummary Reports.26. A SAS report currently flows over two pages because it is toolong to fit within the specified display dimension. Which one ofthe following actions would change the display dimension sothat the report fits on one page?a.Increase the value of the LINENO option.b.Decrease the value of the PAGENO option.c.Decrease the value of the LINESIZE option.d.Increase the value of the PAGESIZE option.Correct answer: dThe PAGESIZE= SAS system option controls the number oflines that compose a page of SAS procedure output. Byincreasing the number of lines available per page, the reportmight fit on one page.You can learn about the PAGESIZE= option in ReferencingFiles and Setting Options.27. Which one of the following SAS REPORT procedure optionscontrols how column headings are displayed over multiplelines?a.SPACE=BEL=d.BREAK=Correct answer: bThe SPLIT= option specifies how to split column headings. TheSPACE=, LABEL= and BREAK= options are not valid optionsin PROC REPORT.You can learn about the SPLIT= option for the REPORTprocedure in Creating Enhanced List and Summary Reports.28. The following SAS program is submitted:ods html file='newfile.html';proc print data=sasuser.houses;run;proc means data=sasuser.houses;run;proc freq data=sasuser.shoes;run;ods html close;proc print data=sasuser.shoes;run;How many HTML files are created?a.1b.2c. 3d.4Correct answer: aBy default, one HTML file is created for each FILE= option orBODY= option in the ODS HTML statement. The ODS HTMLCLOSE statement closes the open HTML file and ends theoutput capture. The Newfile.html file contains the output fromthe PRINT, MEANS, and FREQ procedures.You can learn about the ODS HTML statement in ProducingHTML Output.29. A frequency report of the variable Jobcode in the Work.Actorsdata set is listed below.Jobcode Frequency Percent CumulativeFrequencyCumulativePercentActor I233.33233.33 Actor II233.33466.67 Actor III233.336100.00Frequency Missing = 1The following SAS program is submitted:data work.joblevels;set work.actors;if jobcode in ('Actor I', 'Actor II') thenjoblevel='Beginner';if jobcode='Actor III' thenjoblevel='Advanced';else joblevel='Unknown';run;Which of the following represents the possible values for the variable joblevel in the Work.Joblevels data set?a.Advanced and Unknown onlyb.Beginner and Advanced onlyc.Beginner, Advanced, and Unknownd.' ' (missing character value)Correct answer: aThe DATA step will continue to process those observations that satisfy the condition in the first IF statement Although Joblevel might be set to Beginner for one or more observations, the condition on the second IF statement willevaluate as false, and the ELSE statement will execute and overwrite the value of Joblevel as Unknown.You can learn about•the IF statement in Creating SAS Data Sets from RawData•the ELSE statement in Creating and ManagingVariables.30. The descriptor and data portions of the Work.Salaries data setare shown below.Variable Type Len Posname Char80salary Char816status Char88name status salaryLiz S15,600Herman S26,700Marty S35,000The following SAS program is submitted:proc print data=work.salaries;where salary<20000;run;What is displayed in the SAS log after the program is executed?a.A NOTE indicating that 1 observation is read.b.A NOTE indicating that 0 observations were read.c.A WARNING indicating that character values have beenconverted to numeric values.d.An ERROR indicating that the WHERE clause operatorrequires compatible variables.Correct answer: dSalary is defined as a character variable. Therefore, the valuein the WHERE statement must be the character value 20,000enclosed in quotation marks.You can learn about the WHERE statement in Creating ListReports.31. Which of the following statements is true when SAS encountersa syntax error in a DATA step?a.The SAS log contains an explanation of the error.b.The DATA step continues to execute and the resultingdata set is complete.c.The DATA step stops executing at the point of the errorand the resulting data set contains observations up to thatpoint.d.A note appears in the SAS log indicating that theincorrect statement was saved to a SAS data set forfurther examination.Correct answer: aSAS scans the DATA step for syntax errors during thecompilation phase. If there are syntax errors, those errors getwritten to the log. Most syntax errors prevent further processingof the DATA step.You can learn about how SAS handles syntax errors in theDATA step in Understanding DATA Step Processing.32. Which TITLE statement would display JANE'S DOG as the textof the title?a.title "JANE"S DOG";b.title 'JANE"S DOG';c.title "JANE'S DOG";d.title 'JANE' ' 'S DOG';Correct answer: c。
sas-6土壤有效态证书
sas-6土壤有效态证书
SAS-6土壤有效态证书是指对土壤中有效态成分的检测和认证，通常用于评估土壤中可被植物吸收利用的养分含量。
SAS-6土壤有效态证书的具体内容可能因不同机构或实验室而有所差异，但一般会包括以下信息：
1. 土壤样品信息：包括采样地点、采样时间、采样深度等。
2. 检测项目及方法：检测土壤中有效态养分的项目和方法，例如有效氮、有效磷、有效钾等。
3. 检测结果：检测出的土壤中有效态养分的含量，单位通常是毫克/千克或百分比。
4. 认证意见：对土壤有效态养分的含量是否符合标准或是否具有生产价值等给出认证意见。
需要注意的是，SAS-6土壤有效态证书只是对土壤中有效态成分的检测和认证，不能完全代表土壤的整体质量。
在评估土壤质量时，还需要考虑其他因素，如土壤的物理性质、微生物活性等。
SAS认证考试样题(50题)
SAS 中文论坛网站1.A raw data file is listed below.1---+----10---+----20---+---son Frank 01/31/89daughter June 12-25-87brother Samuel 01/17/51The following program is submitted using this file as input:data work.family;infile 'file-specification';<insert INPUT statement here >run;Which INPUT statement correctly reads the values for the variable Birthdate as SAS date values?a. i nput relation $ first_name $ birthdate date9.;b.i nput relation $ first_name $ birthdate mmddyy8.; c.i nput relation $ first_name $ birthdate : date9.; d.i nput relation $ first_name $ birthdate : mmddyy8.; Correct answer: dAn informat is used to translate the calendar date to a SAS date value. The date values are in the form of two-digit values for month-day-year, so the MMDDYY8. informat must be used. When using an informat with list input, the colon-format modifier is required to correctly associate the informat with the variable name.You can learn about•informats in Reading Date and Time Values • the colon-format modifier in Reading Free-Format Data .2.A raw data file is listed below.1---+----10---+----20---+---Jose,47,210Sue,,108The following SAS program is submitted using the raw data file above as input: data employeestats;<insert INFILE statement here>input name $ age weight;run;The following output is desired:name age weight Jose 47 210 Sue . 108Which of the following INFILE statements completes the program and accesses the data correctly?a. infile 'file-specification ' pad;b. infile 'file-specification ' dsd;SAS 中文论坛网站c. infile 'file-specification ' dlm=',';d. infile 'file-specification ' missover;Correct answer: bThe PAD option specifies that SAS pad variable length records with blanks. TheMISSOVER option prevents SAS from reading past the end of the line when reading free formatted data. The DLM= option specifies the comma as the delimiter; however,consecutive delimiters are treated as one by default. The DSD option correctly reads the data with commas as delimiters and two consecutive commas indicating a missing value like those in this raw data file.You can learn about• the PAD option in Reading Raw Data in Fixed Fields•the MISSOVER option in Creating Multiple Observations from a SingleRecord• the DLM= option and the DSD option in Reading Free-Format Data . 3.The following program is submitted:data numrecords;infile cards dlm=',';input agent1 $ agent2 $ agent3 $;cards;jones,,brownjones,spencer,brown;run;What is the value for the variable named Agent2 in the second observation?a.brown b.spencer c.' ' (missing character value) d. There is no value because only one observation is created.Correct answer: dThe CARDS statement enables you to read instream data. Any number of consecutive commas are considered to be a single delimiter as a result of the DLM= option, and the length of each variable defaults to 8 bytes. Therefore, the values jones , brownjon , and spencer are assigned to Agent1, Agent2, and Agent3, respectively, for the firstobservation. The rest of the data on the record is not read by the INPUT statement and is not output to the data set.You can learn about•the CARDS statement in Creating SAS Data Sets from Raw Data • the default length of variables in Reading Free-Format Data .4.A raw data file is listed below.1---+----10---+----20---+----30---+----40---+----50TWOSTORY 1040 2 1SANDERS ROAD $55,850CONDO 2150 4 2.5JEANS AVENUE $127,150The following program is submitted using this file as input:data work.houses;infile 'file-specification';<insert INPUT statement here>run;Which one of the following INPUT statements reads the raw data file correctly?a.input @1 style $8.+1 sqfeet 4.+1 bedrooms 1.@20 baths 3.street 16.@40 price dollar8;b.input @1 style $8+1 sqfeet 4.+1 bedrooms 1.@20 baths 3.street $16@40 price dollar8.;c.input @1 style $8.+1 sqfeet 4.+1 bedrooms 1.@20 baths 3.street $16.@40 price dollar8.;d.input @1 style $8.+1 sqfeet 4.+1 bedrooms 1.@20 baths 3street 16.@40 price dollar8.;Correct answer: cFormatted input requires periods as part of the informat name. The period is missing from the variables Style and Street in Answer b, the variable Baths in Answer d, and the variable Price in Answer a (which is also missing a dollar sign to read the variable Street as a character value).You can learn about formatted input and informats in Reading Raw Data in Fixed Fields.5. The following SAS program is submitted at the start of a new SAS session:libname sasdata 'SAS-data-library';data sasdata.sales;set sasdata.salesdata;profit=expenses-revenues;run;SAS中文论坛网站SAS 中文论坛网站proc print data=sales;run;The SAS data set Sasdata.Salesdata has ten observations. Which one of the following explains why a report fails to generate?a. The DATA step fails execution.b. The SAS data set Sales does not exist.c. The SAS data set Sales has no observations.d. The PRINT procedure contains a syntax error.Correct answer: bThe DATA step creates a permanent SAS data set, Sasdata.Salesdata . The PRINTprocedure is printing a temporary SAS data set, Sales , that is stored in the Work library. At the beginning of the SAS session, Work.Sales does not exist.You can learn about•creating permanent data sets with the DATA step in Creating SAS Data Setsfrom Raw Data• temporary data sets in Basic Concepts . 6. Which action assigns a reference named SALES to a permanent SAS data library? a. Issuing the command:libref SALES 'SAS-data-library'b. Issuing the command:libname SALES 'SAS-data-library'c.Submitting the statement: libref SALES 'SAS-data-library';d. Submitting the statement: libname SALES 'SAS-data-library';Correct answer: dThe LIBNAME statement assigns a reference known as a libref to a permanent SAS data library. The LIBNAME command opens the LIBNAME window.You can learn about the LIBNAME statement in Referencing Files and Setting Options .7. The following SAS program is submitted:data newstaff;set staff;<insert WHERE statement here>run;Which one of the following WHERE statements completes the program and selects only observations with a Hire_date of February 23, 2000?a. where hire_date='23feb2000'd;b. where hire_date='23feb2000';c. where hire_date='02/23/2000'd;d.where hire_date='02/23/2000';Correct answer: aA SAS date constant must take the form of one- or two-digit day, three-digit month, and two- or four-digit year, enclosed in quotation marks and followed by a d('ddmmmyy<yy>'d).You can learn about SAS date constants in Creating SAS Data Sets from Raw Data. 8. Which one of the following SAS date formats displays the SAS date value for January 16, 2002 in the form of 16/01/2002?a. DATE10.b. DDMMYY10.c. WEEKDATE10.d. DDMMYYYY10.Correct answer: bThe requested output is in day-month-year order and is 10 bytes long, so DDMMYY10. is the correct format. Although WEEKDATE10. is a valid SAS format, it does not display the SAS date value as shown in the question above. DDMMYYYY10. is not a valid SAS date format, and the DATE w. format cannot accept a length of 10.You can learn about•the DDMMYY10. format in Creating List Reports•the WEEKDATE10. format in Reading Date and Time Values.9. Which one of the following displays the contents of an external file from within a SAS session?a. the LIST procedureb.the PRINT procedurec.the FSLIST procedured.the VIEWTABLE windowCorrect answer: cThe PRINT procedure and VIEWTABLE window display the values in SAS data sets. The FSLIST procedure displays the values in external files. There is no LIST procedure in SAS.You can learn about•the PRINT procedure in Creating List ReportsSAS中文论坛网站SAS 中文论坛网站• the VIEWTABLE window in Referencing Files and Setting Options .10. The SAS data set Sashelp.Prdsale contains the variables Region and Salary with 4 observations per Region . Sashelp.Prdsale is sorted primarily by Region and within Region by Salary in descending order.The following program is submitted:data one;set sashelp.prdsale;retain temp;by region descending salary;if first.region thendo;temp=salary;output;end;if last.region thendo;range=salary-temp;output;end;run;For each region, what is the number of observation(s) written to the output data set? a. 0b. 1c. 2d. 4Correct answer: cThe expression first.region is true once for each region group. The expression last.region is true once for each region group. Therefore, each OUTPUT statement executes once for a total of 2 observations in the output data set.You can learn about the FIRST.variable expression and the OUTPUT statement in Reading SAS Data Sets .11. The following SAS program is submitted:proc contents data=sasuser.houses;run;The exhibit below contains partial output produced by the CONTENTS procedure. Data Set NameSASUSER.HOUSES Observations 15 Member TypeDATA Variables 6 EngineV9 Indexes 0 CreatedTuesday, April 22, 2003 03:09:25 PMObservation Length 56 Last ModifiedTuesday, April 22, 2003 03:09:25 PMDeleted Observations0 Protection CompressedNOData Set Type Sorted NOLabel Residential housingfor saleData Representation WINDOWS_32Encoding wlatin1 Western(Windows)Which of the following describes the Sasuser.Houses data set?a.The data set is sorted but not indexed.b.The data set is both sorted and indexed.c.The data set is not sorted but is indexed.d.The data set is neither sorted nor indexed.Correct answer: dThe exhibit above shows partial output from the CONTENTS procedure, In the top right-hand column of the output, you see that Indexes has a value of 0, which indicates that no indexes exist for this data set. Also, Sorted has a value of NO, which indicates that the data is not sorted.You can learn about the CONTENTS procedure in Referencing Files and Setting Options.12.The following SAS program is submitted:proc sort data=work.test;by fname descending salary;run;Which one of the following represents how the observations are sorted?a. The data set Work.Test is stored in ascending order by both Fname and Salary values.b. The data set Work.Test is stored in descending order by both Fname and Salary values.c. The data set Work.Test is stored in descending order by Fname and ascending order by Salary values.d. The data set Work.Test is stored in ascending order by Fname and in descending order by Salary values.Correct answer: dThe DESCENDING keyword is placed before the variable name it modifies in the BY statement, so the correct description is in descending order by Salary value within ascending Fname values.You can learn about the SORT procedure and the DESCENDING keyword in Creating List Reports.13.The following SAS program is submitted:data names;SAS中文论坛网站title='EDU';if title='EDU' thenDivision='Education';else if title='HR' thenDivision='Human Resources';else Division='Unknown';run;Which one of the following represents the value of the variable Division in the output data set?catiocationc.Human Red.Human ResourcesCorrect answer: bThe length of the variable Division is set to 9 when the DATA step compiles. Since the value of the variable Title is EDU, the first IF condition is true; therefore, the value of the variable Division is Education.You can learn about•the length of a variable in Understanding DATA Step Processing•IF-THEN statements in Creating and Managing Variables.14.Which one of the following SAS programs creates a variable named City with a value of Chicago?a.data work.airports;AirportCode='ord';if AirportCode='ORD' City='Chicago';run;b.data work.airports;AirportCode='ORD';if AirportCode='ORD' City='Chicago';run;c.data work.airports;AirportCode='ORD';if AirportCode='ORD' then City='Chicago';run;d.data work.airports;AirportCode='ORD';if AirportCode='ORD';then City='Chicago';run;Correct answer: cThe correct syntax for an IF-THEN statement is: IF expression THEN statement;In this example, the variable City is assigned a value of Chicago only if the expression AirportCode='ORD' is true.SAS中文论坛网站SAS 中文论坛网站You can learn about IF-THEN statements in Creating and Managing Variables .15.The following SAS program is submitted:data work.building;code='DAL523';code='SANFRAN604';code='HOUS731';length code $ 20;run;Which one of the following is the length of the code variable?a. 6b. 7c. 10d. 20Correct answer: aThe DATA step first goes through a compilation phase, then an execution phase. The length of a variable is set during the compilation phase and is based on the first time the variable is encountered. In this case, the variable code is set to the length of the text string DAL523 which is 6 characters long. The next assignment statements are ignored during compilation. The LENGTH statement is also ignored since the length has already been established, but a note will be written to the log.You can learn about•the compilation phase of the DATA step in Understanding DATA StepProcessing• the LENGTH statement in Creating and Managing Variables .16. Which of the following statements creates a numeric variable named IDnumber with a value of 4198?a. IDnumber=4198;b. IDnumber='4198';c. length IDnumber=8;d. length IDnumber $ 8;Correct answer: aThe first reference to the SAS variable in the DATA step sets the name, type, and length of the variable in the program data vector (PDV) and in the output SAS data set. The assignment statement IDnumber=4198; is the first reference and creates a numeric variable named IDnumber with a default storage length of 8 bytes.You can learn about• creating variables in the DATA step in Understanding DATA Step ProcessingSAS 中文论坛网站• numeric variables in Basic Concepts .17. The following program is submitted:data fltaten;input jobcode $ salary name $;cards;FLAT1 70000 BobFLAT2 60000 JoeFLAT3 30000 Ann;run;data desc;set fltaten;if salary>60000 then description='Over 60';else description='Under 60';run;What is value of the variable named description when the value for salary is 30000? a.Under 6 b.Under 60 c.Over 60 d. ' ' (missing character value)Correct answer: aThe variable description is being created by the IF-THEN/ELSE statement during compilation. The first occurrence of the variable description is on the IF statement, and since it is assigned the value Over 60, the length of the variable is 7. Therefore, for the salary value of 30000, description has the value of Under 6 (the 0 is truncated.) You can learn about•the compilation phase of the DATA step in Understanding DATA StepProcessing• IF-THEN/ELSE statements in Creating and Managing Variables .18. A raw data file is listed below.1---+----10---+----20---+---10232015The following program is submitted:data all_sales;infile 'file-specification';input receipts;<insert statement(s) here>run;SAS 中文论坛网站Which statement(s) complete(s) the program and produce(s) a running total of the Receipts variable?a. total+receipts;b.total 0; sum total;c. total=total+receipts;d. total=sum(total,receipts);Correct answer: aThe SUM function and the assignment statement do not retain values across iterations of the DATA step. The sum statement total+receipts; initializes total to 0, ignores missing values of receipt , retains the value of total from one iteration to the next, and adds the value of receipts to total .You can learn about the sum statement in Creating and Managing Variables .19.A raw data file is listed below.1---+----10---+----20---+---1901 21905 11910 61925 11941 1The following SAS program is submitted and references the raw data file above: data money;infile 'file-specification';input year quantity;total=total+quantity;run;What is the value of total when the data step finishes executing?a.0 b.1 c.11 d. . (missing numeric value)Correct answer: dThe variable Total is assigned a missing value during the compilation phase of the DATA step. When the first record is read in, SAS processes: total=.+2; which results in a missing value. Therefore the variable Total remains missing for all observations. You can learn about• the compilation phase of the DATA step in Understanding DATA StepProcessingSAS 中文论坛网站• using missing values with arithmetic operators in Creating SAS Data Sets fromRaw Data .20.The following program is submitted:data test;average=mean(6,4,.,2);run;What is the value of average ?a.0 b.3 c.4 d. . (missing numeric value)Correct answer: cThe MEAN function adds all of the non-missing values and divides by the number of non-missing values. In this case, 6 + 4 + 2 divided by 3 is 4.You can learn about the MEAN function in Transforming Data with SAS Functions .21.The following SAS program is submitted:data work.AreaCodes;Phonenumber=3125551212;Code='('!!substr(Phonenumber,1,3)!!')';run;Which one of the following is the value of the variable Code in the output data set? a. ( 3)b. (312)c. 3d. 312Correct answer: aAn automatic data conversion is performed whenever a numeric variable is used where SAS expects a character value. The numeric variable is written with the BEST12. format and the resulting character value is right-aligned when the conversion occurs. In this example, the value of Phonenumber is converted to character and right-aligned before the SUBSTR function is performed. Since there are only 10 digits in the value ofPhonenumber , the right-aligned value begins with two blanks. Therefore the SUBSTR function picks up two blanks and a 3, and uses the BEST12. format to assign that value to Code . Then, the parentheses are concatenated before and after the two blanks and a 3. You can learn about automatic data conversion and the SUBSTR function inTransforming Data with SAS Functions .22.The following SAS program is submitted:data work.inventory;products=7;SAS 中文论坛网站do until (products gt 6);products+1;end;run;Which one of the following is the value of the variable products in the output data set? a. 5b. 6c. 7d. 8Correct answer: dA DO UNTIL loop always executes at least once because the condition is not evaluated until the bottom of the loop. In the SAS program above, the value of Products isincremented from 7 to 8 on the first iteration of the DO UNTIL loop, before the condition is checked. Therefore the value of Products is 8.You can learn about DO UNTIL loops in Generating Data with DO Loops .23.The following program is submitted:data work.test;set work.staff (keep=salary1 salary2 salary3);<insert ARRAY statement here>run;Which ARRAY statement completes the program and creates new variables?a. array salary{3};b. array new_salary{3};c. array salary{3} salary1-salary3;d. array new_salary{3} salary1-salary3;Correct answer: bAlthough each of the ARRAY statements listed above is a valid statement, only AnswerB creates new variables named new_salary1, new_salary2 and new_salary3. AnswerC and AnswerD both create an array that groups the existing data set variables salary1, salary2, and salary3. Since the array in Answer A is named salary , it also uses the existing data set variables.You can learn about creating new variables in an ARRAY statement in Processing Variables with Arrays .24.Which of the following permanently associates a format with a variable?a. the FORMAT procedureb. a FORMAT statement in a DATA stepc. an INPUT function with format modifiersd. an INPUT statement with formatted style inputCorrect answer: bSAS 中文论坛网站To permanently associate a format with a variable, you use the FORMAT statement in a DATA step. You can use the FORMAT procedure to create a user-defined format. You use the INPUT function to convert character data values to numeric values with an informat. You use the INPUT statement to read data into a data set with an informat. You can learn about•permanently assigning a format to a variable in Creating and Managing Variables •the FORMAT statement in Creating List Reports •the FORMAT procedure in Creating and Applying User-Defined Formats •the INPUT function in Transforming Data with SAS Functions • the INPUT statement in Reading Raw Data in Fixed Fields .25.The following report is generated:Styleof homesn A skingPriceCONDO 4 $99,313RANCH 4 $68,575SPLIT3 $77,983 TWOSTORY4 $83,825Which of the following steps created the report?a. proc freq data=sasuser.houses;tables style price /nocum;format price dollar10.;label style="Style of homes"price="Asking price";run;b.proc print data=sasuser.houses; class style;var price;table style,n price*mean*f=dollar10.;label style="Style of homes"price="Asking price";run;c.proc means data=sasuser.houses n mean; class style;var price;format price dollar10.;label style="Style of homes"price="Asking price";run;d.proc report data=sasuser.houses nowd headline; column style n price;define style / group "Style of homes";define price / mean format=dollar8."Asking price";run;Correct answer: dThe FREQ procedure cannot create the average asking price. The CLASS statement and the VAR statement are not valid for use with the PRINT procedure. The MEANS procedure output would have both the N statistic and the N Obs statistic since a CLASS statement is used. The REPORT procedure produced the report.You can learn about•the FREQ procedure in Producing Descriptive Statistics•the PRINT procedure in Creating List Reports•the MEANS procedure in Producing Descriptive Statistics•the REPORT procedure in Creating Enhanced List and Summary Reports. 26.A SAS report currently flows over two pages because it is too long to fit within the specified display dimension. Which one of the following actions would change the display dimension so that the report fits on one page?a.Increase the value of the LINENO option.b.Decrease the value of the PAGENO option.c.Decrease the value of the LINESIZE option.d.Increase the value of the PAGESIZE option.Correct answer: dThe PAGESIZE= SAS system option controls the number of lines that compose a page of SAS procedure output. By increasing the number of lines available per page, the report might fit on one page.You can learn about the PAGESIZE= option in Referencing Files and Setting Options.27.Which one of the following SAS REPORT procedure options controls how column headings are displayed over multiple lines?a. SPACE=b. SPLIT=c. LABEL=d. BREAK=Correct answer: bThe SPLIT= option specifies how to split column headings. The SPACE=, LABEL= and BREAK= options are not valid options in PROC REPORT.You can learn about the SPLIT= option for the REPORT procedure in Creating Enhanced List and Summary Reports.SAS中文论坛网站28.The following SAS program is submitted:ods html file='newfile.html';proc print data=sasuser.houses;run;proc means data=sasuser.houses;run;proc freq data=sasuser.shoes;run;ods html close;proc print data=sasuser.shoes;run;How many HTML files are created?a. 1b. 2c. 3d. 4Correct answer: aBy default, one HTML file is created for each FILE= option or BODY= option in the ODS HTML statement. The ODS HTML CLOSE statement closes the open HTML file and ends the output capture. The Newfile.html file contains the output from the PRINT, MEANS, and FREQ procedures.You can learn about the ODS HTML statement in Producing HTML Output.29.A frequency report of the variable Jobcode in the Work.Actors data set is listed below.Jobcode Frequency Percent CumulativeFrequency CumulativePercentActor I233.33233.33Actor II233.33466.67Actor III233.336100.00Frequency Missing = 1The following SAS program is submitted:data work.joblevels;set work.actors;if jobcode in ('Actor I', 'Actor II') thenjoblevel='Beginner';if jobcode='Actor III' thenjoblevel='Advanced';else joblevel='Unknown';run;Which of the following represents the possible values for the variable joblevel in the Work.Joblevels data set?a.Advanced and Unknown onlySAS中文论坛网站SAS 中文论坛网站b. Beginner and Advanced onlyc. Beginner , Advanced , and Unknownd. ' ' (missing character value)Correct answer: aThe DATA step will continue to process those observations that satisfy the condition in the first IF statement Although Joblevel might be set to Beginner for one or more observations, the condition on the second IF statement will evaluate as false, and the ELSE statement will execute and overwrite the value of Joblevel as Unknown . You can learn about•the IF statement in Creating SAS Data Sets from Raw Data • the ELSE statement in Creating and Managing Variables .30.The descriptor and data portions of the Work.Salaries data set are shown below. Variable Type Len Posname Char 8 0salary Char 8 16status Char 8 8name status salary Liz S 15,600 Herman S 26,700 Marty S 35,000The following SAS program is submitted:proc print data=work.salaries;where salary<20000;run;What is displayed in the SAS log after the program is executed?a. A NOTE indicating that 1 observation is read.b. A NOTE indicating that 0 observations were read.c. A WARNING indicating that character values have been converted to numeric values.d. An ERROR indicating that the WHERE clause operator requires compatible variables. Correct answer: dSalary is defined as a character variable. Therefore, the value in the WHERE statement must be the character value 20,000 enclosed in quotation marks.You can learn about the WHERE statement in Creating List Reports .31.Which of the following statements is true when SAS encounters a syntax error in a DATA step?SAS 中文论坛网站a. The SAS log contains an explanation of the error.b. The DATA step continues to execute and the resulting data set is complete.c. The DATA step stops executing at the point of the error and the resulting data set contains observations up to that point.d. A note appears in the SAS log indicating that the incorrect statement was saved to a SAS data set for further examination.Correct answer: aSAS scans the DATA step for syntax errors during the compilation phase. If there are syntax errors, those errors get written to the log. Most syntax errors prevent further processing of the DATA step.You can learn about how SAS handles syntax errors in the DATA step in Understanding DATA Step Processing .32.Which TITLE statement would display JANE'S DOG as the text of the title?a. title "JANE"S DOG";b. title 'JANE"S DOG';c. title "JANE'S DOG";d. title 'JANE' ' 'S DOG';Correct answer: cThe title in a TITLE statement must be enclosed in a pair of matched quotation marks. Unbalanced quotation marks can cause problems for SAS. To hide an unmatched single quotation mark, surround the title text with matched double quotation marks.You can learn about•the TITLE statement in Creating List Reports • unbalanced quotation marks in Editing and Debugging SAS Programs .33.The following SAS program is submitted:data test;input animal1 $ animal2 $mlgrams1 mlgrams2;cards;hummingbird ostrich 54000.39 90800000.87;run;Which one of the following represents the values of each variable in the output data set?a. animal1 animal2 mlgrams1 mlgrams2 hummingb ostrich 54000.39 90800000b. animal1 animal2 mlgrams1 mlgrams2 hummingb ostrich 54000.39 90800000.87c. animal1 animal2 mlgrams1 mlgrams2 hummingbird ostrich 54000.39 90800000d. animal1 animal2 mlgrams1 mlgrams2。
SAS认证考试相关课程介绍
SAS认证课程列表一、课程列表课程名称培训天数价格每人每天基础程序员认证2 16003 1600高级程序员认证2 16002 16003 1600 合计12二、课程大纲及简介课程概述:本课程是为希望学习SAS编程的人员而专门设计的,它是SAS编程和其他SAS课程的基础;如果您并不希望学习SAS编程或者更喜欢图形化操作,我们建议您学习的课程;本课程可以帮助您准备认证考试;学习目标:熟悉SAS桌面环境将各种类型的数据读入SAS数据集中对SAS数据集进行校验和清洗创建SAS变量和数据子集合并SAS数据集创建增强列表和总结报表课程内容:1.介绍课程结构SAS基础概要2.SAS系统入门介绍SAS编程提交SAS程序3.学习SAS句法掌握基本概念识别和修正句法错误4.熟悉SAS数据集查看描述部分和数据部分访问SAS数据库5.读入SAS数据集读入数据入门将SAS数据作为输入选取部分观测和变量增加永久性变量属性6.读入Excel格式数据读入Excel格式数据7.读入固定格式的原始数据文件读入标准的分隔符数据读入非标准的分隔符数据8.整理和清洗数据整理和清洗数据入门在读入原始数据时检验数据错误使用PRINT和FREQ过程呈现数据使用MEANS和UNIVARIATE过程呈现数据清洗无效数据9.生成数据创建变量创建条件变量选择部分观测10.拼接SAS数据集拼接数据集入门扩展数据集合并数据集一对一合并数据集一对多合并数据集合并不匹配数据集11.增强报表通过全局语句增加标签和格式创建自定义格式选取部分观测及对观测进行分组处理将结果输出至外部文件12.生成汇总报表使用FREQ过程使用MEANS过程13.使用SAS/GRAPH作图入门自学创建条形图、饼图创建点图强化输出课程概述:本课程是为希望学习通过SAS DATA和过程步来访问、转换和汇总SAS数据集的人员而专门设计的;它基于课程介绍的基本概念而展开,所以不建议SAS初学者直接选择此课程;本课程可以帮助您准备认证考试;学习目标:控制SAS数据集的输入和输出合并SAS数据集汇总、读入、读出不同类型的数据执行DO循环和SAS数组处理字符、数值和日期变量的转换课程内容:1.简介课程结构课程概述SAS语法概述掌握SAS桌面环境自学2.输入和输出管理输出多个观测创建多个SAS数据集选择变量和观测3.汇总数据创建累加变量对分组数据累加求和4.读入原始数据文件格式化读入原始数据文件控制记录读入列表输入附加技术自学5.数据转换操作字符型变量操作数值型变量转换变量类型6.调试技术使用PUTLOG语句使用DEBUG语句7.循环处理数据DO循环处理SAS数组处理使用SAS数组8.SAS数据集重构使用DATA步转置数据集使用TRANSPOSE过程9.SAS数据集合并使用数据处理技术进行数据集合并10.其它SAS语言语言概述SQL过程使用SAS宏使用11.补充内容SAS资源其它推荐课程3.课程概述:本课程指导学员学习通过结构化查询语言SQL处理数据;本课程可以帮助您准备认证考试; 学习目标:查询和将数据分组汇总和呈现数据合并表,包括复杂的合并和拼接创建和修改表视图和索引通过一个SQL查询替代多个DATA步和PROC步课程时间: 2天适合学员:业务分析人员和SAS编程人员必备条件:学习本课程之前,学员应该能够在您的操作系统中提交SAS程序创建和访问SAS数据集使用算数、比较、逻辑运算符调用SAS程序您可以在的课程中学习到相关内容;学员不需要提前具备SQL的相关知识; 课程内容:1.入门课程结构介绍结构化查询语言SQL业务场景介绍2.基础查询SQL过程概览指定列指定行3.显示查询结果展示数据汇总数据4.子查询不相关子查询相关子查询自学5.SQL合并SQL合并简介复杂的SQL合并6.SET运算符SET运算符介绍EXCEPT运算符INTERSECT运算符UNION运算符OUTER UNION运算符7.创建表和视图通过SQL语句创建视图通过SQL语句创建表自学完整性约束自学8.其它SQL特性设置SQL过程选项字典表和视图宏语言和PROC SQL的接口程序测试及性能9.管理数据表索引介绍创建索引自学维护数据表10.访问关系型数据库自学通过LIBNAME和CONNECT语句连接数据库使用SQL Pass-Through Facility执行特定数据库的SQL语句11.进一步学习SAS资源课程之外培训材料:本课程将提供书面的培训教材,及某些课程相应的课程数据;使用产品:本课程需要用到的软件：Base SAS;本课程适合正在使用SAS 8或者SAS 9的学员;4.课程概述:本课程介绍SAS宏的基本结构和如何设计、编写、调视宏系统;本课程着重介绍宏程序究竟是如何执行的; 本课程可以帮助您准备接下来的的认证考试;学习目标:在SAS语句中实现字符替换自动和自定义地生成SAS语句条件或者循环的构造SAS语句使用宏变量和宏函数课程时间: 2天适合学员:有经验的SAS编程人员,他们对SAS数据步处理有深入的了解,同时希望编写可重用的,灵活的SAS程序必备条件:学习本课程之前,学员应该完成课程的学习或者具备相应的知识;尤其是能够通过数据步读入和输出SAS数据集或者外部文件使用数据步的编程语句比如IF-THEN/ELSE, DO WHILE, DO UNTIL和循环DO语句使用SAS数据集选项比如DROP=,KEEP=,OBS=使用字符型函数比如SUBSTR,SCAN,INDEX,UPCASE通过WHERE语句构造数据子集创建和使用SAS日期值和日期常数使用SORT,PRINT,CONTENTS,MEANS,FREQ,TABULATE和CHART等SAS过程课程内容:1.宏语言介绍课程结构宏语言的目的程序流2.宏变量宏变量的介绍系统宏变量宏变量的引用自定义的宏变量宏变量的命名限制宏函数3.宏定义定义和调用宏宏参数宏存储自学4.DATA步和SQL接口在DATA步中创建宏变量间接引用宏变量在DATA步中调用宏变量自学在SQL中创建宏变量5.宏程序条件执行过程参数验证循环执行过程全局和局部符号表6.补充内容SAS资源其它推荐课程培训材料:本课程将提供书面的培训教材,及某些课程相应的课程数据;使用产品:本课程需要用到的软件：Base SAS;本课程适合正在使用SAS 8或者SAS 9的学员;5.课程概述:本课程是为从事数据处理工作的SAS编程人员专门设计的;本课程主要关注数据处理技术、处理性能和系统资源消耗的收益对比来帮助编程人员选择最合适的方式处理数据;本课程可以帮助您准备认证考试;学习目标:管理内存、I/O和CPU资源创建和使用索引在DATA步中使用Hash和Hiter对象、数组和Format来检索数据压缩SAS数据集对SAS数据集进行抽样课程内容:1.介绍课程结构评估运行性能SAS DATA步处理2.控制I/O和内存控制I/O管理数据集的大小压缩SAS数据集控制内存自学控制页面大小和变量缓区数自学3.数据访问创建索引使用索引创建样本数据集自学4.查询技术介绍介绍查询技术内存查询技术磁盘存储技术5.使用DATA步数组以一维数组作为查询表以多维数组作为查询表从SAS数据集中载入多维数组6.使用DATA步Hash 和 Hiter对象介绍使用Hash 对象方法从SAS数据集中把数据载入Hash 对象使用DATA步Hiter对象约束查询中使用Hash 对象自学7.创建和使用格式使用Formats作为查询表使用Picture Formats自学8.横向合并数据DATA步合并技术和SQL过程合并技术通过索引合并数据合并汇总数据和明细数据有条件地合并数据自学9.SAS数据集排序排序Group BY方式处理自学10.编程效率介绍更灵活的编程垂直合并原始数据文件创建视图通过FILE和PUT语句创建SAS程序文件通过FCMP过程自学11.定制SAS 会话自学介绍编辑配置文件创建autoexec.sas文件使用SA S Registry12.补充内容SAS资源其它推荐课程。
sas-12土壤有效态证书
sas-12土壤有效态证书
关于SAS-12土壤有效态证书，这是一个比较专业的领域，我会
尽量从多个角度来解释。
首先，SAS-12是指土壤农业化学分析中的一种方法，它用于测
定土壤中的有效态硫含量。
有效态硫是指土壤中植物可以直接吸收
和利用的硫的形态，它对于植物的生长发育非常重要。
SAS-12方法
通常是指采用一定的提取剂（比如硫酸铵）来将土壤中的有效态硫
提取出来，然后通过化学分析方法测定其含量。
这个方法在农业生
产中具有重要的意义，可以帮助农民了解土壤中硫的营养状况，从
而合理施肥，提高作物产量和品质。
其次，土壤有效态硫含量的证书可能是指经过实验室测试和认
证的土壤样品报告。
这些报告通常会包括土壤样品的有效态硫含量，以及针对该含量的评价和建议。
这些证书可以帮助农民和农业专业
人士更好地了解土壤的养分状况，为土壤肥力管理提供科学依据。
总的来说，SAS-12土壤有效态证书涉及到土壤分析方法和土壤
养分含量的认证报告，它对于农业生产和土壤肥力管理具有重要意
义。
希望这些信息能够帮助你更好地理解SAS-12土壤有效态证书的相关内容。
SAS认证220道_练习题及详细答案
SAS Certificate Base Practice Questions and Detailed Answers Chapter 1: Basic ConceptsChapter 2: Referencing Files and Setting OptionsChapter 3: Editing and Debugging SAS ProgramsChapter 4: Creating List ReportsChapter 5: Creating SAS Data Sets from Raw DataChapter 6: Understanding DATA Step ProcessingChapter 7: Creating and Applying User-Defined FormatsChapter 8: Creating Enhanced List and Summary ReportsChapter 9: Producing Descriptive StatisticsChapter 10: Producing HTML OutputChapter 11: Creating and Managing VariablesChapter 12: Reading SAS Data SetsChapter 13: Combining SAS Data SetsChapter 14: Transforming Data with SAS FunctionsChapter 15: Generating Data with DO LoopsChapter 16: Processing Variables with ArraysChapter 17: Reading Raw Data in Fixed FieldsChapter 18: Reading Free-Format DataChapter 19: Reading Date and Time ValuesChapter 20: Creating a Single Observation from Multiple RecordsChapter 21: Creating Multiple Observations from a Single RecordChapter 22: Reading Hierarchical FilesChapter 1: Basic Concepts Answer Key1.How many observations and variables does the data set below contain?a. 3 observations, 4 variablesb. 3 observations, 3 variablesc. 4 observations, 3 variablesd.can't tell because some values are missingCorrect answer:cRows in the data set are called observations, and columns are called variables. Missing values don't affect the structure of the data set.2.How many program steps are executed when the program below is processed?data user.tables;infile jobs;input date name $ job $;run;proc sort data=user.tables;by name;run;proc print data=user.tables;run;a.threeb.fourc.fived.sixCorrect answer:aWhen it encounters a DATA, PROC, or RUN statement, SAS stops reading statements andexecutes the previous step in the program. The program above contains one DATA step and two PROC steps, for a total of three program steps.3.What type of variable is the variable AcctNum in the data set below?a.numericb.characterc.can be either character or numericd.can't tell from the data shownCorrect answer:bIt must be a character variable, because the values contain letters and underscores, which are not valid characters for numeric values.4.What type of variable is the variable Wear in the data set below?a.numericb.characterc.can be either character or numericd.can't tell from the data shownCorrect answer:aIt must be a numeric variable, because the missing value is indicated by a period rather than by a blank.5.Which of the following variable names is valid?a.4BirthDateb.$Costc._Items_d.Tax-RateCorrect answer:cVariable names follow the same rules as SAS data set names. They can be 1 to 32 characters long, must begin with a letter (A–Z, either uppercase or lowercase) or an underscore, and can continue with any combination of numbers, letters, or underscores.6.Which of the following files is a permanent SAS file?a.Sashelp.PrdSaleb.Sasuser.MySalesc.Profits.Quarter1d.all of the aboveCorrect answer:dTo store a file permanently in a SAS data library, you assign it a libref other than the default Work. For example, by assigning the libref Profits to a SAS data library, you specify that files within the library are to be stored until you delete them. Therefore, SAS files in the Sashelp and Sasuser libraries are permanent files.7.In a DATA step, how can you reference a temporary SAS data set named Forecast?a.Forecastb.Work.Forecastc.Sales.Forecast (after assigning the libref Sales)d.only a and b aboveCorrect answer:dTo reference a temporary SAS file in a DATA step or PROC step, you can specify the one-level name of the file (for example, Forecast) or the two-level name using the libref Work (for example, Work.Forecast).8.What is the default length for the numeric variable Balance?a. 5b. 6c.7d.8Correct answer:dThe numeric variable Balance has a default length of 8. Numeric values (no matter how many digits they contain) are stored in 8 bytes of storage unless you specify a different length.9.How many statements does the following SAS program contain?proc print data=new.prodsalelabel double;var state day price1 price2; where state='NC';label state='Name of State';run;a.threeb.fourc.fived.sixCorrect answer:cThe five statements are•PROC PRINT statement (two lines long)•VAR statement•WHERE statement (on the same line as the VAR statement)•LABEL statement•RUN statement (on the same line as the LABEL statement).10.What is a SAS data library?a. a collection of SAS files, such as SAS data sets and catalogsb.in some operating environments, a physical collection of SAS filesc.in some operating environments, a logically related collection of SAS filesd.all of the aboveCorrect answer:dEvery SAS file is stored in a SAS data library, which is a collection of SAS files, such as SAS data sets and catalogs. In some operating environments, a SAS data library is a physical collection of files. In others, the files are only logically related. In the Windows and UNIX environments, a SAS data library is typically a group of SAS files in the same folder or directory.Chapter 2: Referencing Files and Setting Options1.If you submit the following program, how does the output look?options pagesize=55 nonumber;proc tabulate data=clinic.admit;class actlevel;var age height weight;table actlevel,(age height weight)*mean;run;options linesize=80;proc means data=clinic.heart min max maxdec=1;var arterial heart cardiac urinary;class survive sex;run;a.The PROC MEANS output has a print line width of 80 characters, but the PROCTABULATE output has no print line width.b.The PROC TABULATE output has no page numbers, but the PROC MEANS outputhas page numbers.c.Each page of output from both PROC steps is 55 lines long and has no page numbers,and the PROC MEANS output has a print line width of 80 characters.d.The date does not appear on output from either PROC step.Correct: answer:cWhen you specify a system option, it remains in effect until you change the option or end your SAS session, so both PROC steps generate output that is printed 55 lines per page with no page numbers. If you don't specify a system option, SAS uses the default value for that system option.2.In order for the date values 05May1955 and 04Mar2046 to be read correctly, what value mustthe YEARCUTOFF= option have?a. a value between 1947 and 1954, inclusiveb.1955 or higherc.1946 or higherd.any valueCorrect answer:dAs long as you specify an informat with the correct field width for reading the entire date value, the YEARCUTOFF= option doesn't affect date values that have four-digit years.3.When you specify an engine for a library, you are always specifyinga.the file format for files that are stored in the library.b.the version of SAS that you are using.c.access to other software vendors' files.d.instructions for creating temporary SAS files.Correct answer:aA SAS engine is a set of internal instructions that SAS uses for writing to and reading from files in a SAS library. Each engine specifies the file format for files that are stored in the library, which in turn enables SAS to access files with a particular format. Some engines access SAS files, and other engines support access to other vendors' files.4.Which statement prints a summary of all the files stored in the library named Area51?a.proc contents data=area51._all_ nods;b.proc contents data=area51 _all_ nods;c.proc contents data=area51 _all_ noobs;d.proc contents data=area51 _all_.nods;Correct answer:aTo print a summary of library contents with the CONTENTS procedure, use a period to append the _ALL_ option to the libref. Adding the NODS option suppresses detailed information about the files.5.The following PROC PRINT output was created immediately after PROC TABULATEoutput. Which SAS system options were specified when the report was created?a.OBS=, DATE, and NONUMBERb.PAGENO=1, and DATEc.NUMBER and DATE onlyd.none of the aboveCorrect answer:bClearly, the DATE and PAGENO= options are specified. Because the page number on the output is 1, even though PROC TABULATE output was just produced. If you don't specify PAGENO=, all output in the Output window is numbered sequentially throughout your SAS session.6.Which of the following programs correctly references a SAS data set named SalesAnalysisthat is stored in a permanent SAS library?a.data saleslibrary.salesanalysis;set mydata.quarter1sales;if sales>100000;run;b.data mysales.totals;set sales_99.salesanalysis;if totalsales>50000;run;c.proc print data=salesanalysis.quarter1;var sales salesrep month;run;d.proc freq data=1999data.salesanalysis;tables quarter*sales; run;Correct answer:bLibrefs must be 1 to 8 characters long, must begin with a letter or underscore, and can contain only letters, numbers, or underscores. After you assign a libref, you specify it as the first element in the two-level name for a SAS file.7.Which time span is used to interpret two-digit year values if the YEARCUTOFF= option isset to 1950?a.1950-2049b.1950-2050c.1949-2050d.1950-2000Correct answer:aThe YEARCUTOFF= option specifies which 100-year span is used to interpret two-digit year values. The default value of YEARCUTOFF= is 1920. However, you can override the default and change the value of YEARCUTOFF= to the first year of another 100-year span. If you specify YEARCUTOFF=1950, then the 100-year span will be from 1950 to 2049.8.Asssuming you are using SAS code and not special SAS windows, which one of thefollowing statements is false?a.LIBNAME statements can be stored with a SAS program to reference the SAS libraryautomatically when you submit the program.b.When you delete a libref, SAS no longer has access to the files in the library.However, the contents of the library still exist on your operating system.c.Librefs can last from one SAS session to another.d.You can access files that were created with other vendors' software by submitting aLIBNAME statement.Correct answer:cThe LIBNAME statement is global, which means that librefs remain in effect until you modify them, cancel them, or end your SAS session. Therefore, the LIBNAME statement assigns the libref for the current SAS session only. You must assign a libref before accessingSAS files that are stored in a permanent SAS data library.9.What does the following statement do?libname osiris spss 'c:\myfiles\sasdata\data';a.defines a library called Spss using the OSIRIS engineb.defines a library called Osiris using the SPSS enginec.defines two libraries called Osiris and Spss using the default engined.defines the default library using the OSIRIS and SPSS enginesCorrect answer:bIn the LIBNAME statement, you specify the library name before the engine name. Both are followed by the path.10.What does the following OPTIONS statement do?options pagesize=15 nodate;a.suppresses the date and limits the page size of the logb.suppresses the date and limits the vertical page size for text outputc.suppresses the date and limits the vertical page size for text and HTML outputd.suppresses the date and limits the horizontal page size for text outputCorrect answer:bThese options affect the format of listing output only. NODATE suppresses the date and PAGESIZE= determines the number of rows to print on the page.Chapter 3: Editing and Debugging SAS Programs Answer Key1.As you write and edit SAS programs it's a good idea toa.begin DATA and PROC steps in column one.b.indent statements within a step.c.begin RUN statements in column one.d.all of the aboveCorrect answer:dAlthough you can write SAS statements in almost any format, a consistent layout enhances readability and enables you to understand the program's purpose. It's a good idea to begin DATA and PROC steps in column one, to indent statements within a step, to begin RUN statements in column one, and to include a RUN statement after every DATA step or PROC step.2.What usually happens when an error is detected?a.SAS continues processing the step.b.SAS continues to process the step, and the log displays messages about the error.c.SAS stops processing the step in which the error occurred, and the log displaysmessages about the error.d.SAS stops processing the step in which the error occurred, and the program outputdisplays messages about the error.Correct answer:cSyntax errors generally cause SAS to stop processing the step in which the error occurred. When a program that contains an error is submitted, messages regarding the problem also appear in the SAS log. When a syntax error is detected, the SAS log displays the word ERROR, identifies the possible location of the error, and gives an explanation of the error.3. A syntax error occurs whena.some data values are not appropriate for the SAS statements that are specified in aprogram.b.the form of the elements in a SAS statement is correct, but the elements are not validfor that usage.c.program statements do not conform to the rules of the SAS language.d.none of the aboveCorrect canswer:Syntax errors are common types of errors. Some SAS system options, features of the Editorwindow, and the DATA step debugger can help you identify syntax errors. Other types oferrors include data errors, semantic errors, and execution-time errors.4.How can you tell whether you have specified an invalid option in a SAS program?a. A log message indicates an error in a statement that seems to be valid.b. A log message indicates that an option is not valid or not recognized.c.The message "PROC running" or "DATA step running" appears at the top of theactive window.d.You can't tell until you view the output from the program.Correct answer:bWhen you submit a SAS statement that contains an invalid option, a log message notifies you that the option is not valid or not recognized. You should recall the program, remove or replace the invalid option, check your statement syntax as needed, and resubmit the corrected program.5.Which of the following programs contains a syntax error?Correct answer:bThe DATA step contains a misspelled keyword (dat instead of data). However, this is such a common (and easily interpretable) error that SAS produces only a warning message, not an error.6.What does the following log indicate about your program?proc print data=sasuser.cargo99var origin dest cargorev;2276ERROR 22-322: Syntax error, expecting one of the following:;, (, DATA, DOUBLE, HEADING, LABEL, N, NOOBS, OBS, ROUND, ROWS, SPLIT, STYLE,UNIFORM, WIDTH.ERROR 76-322: Syntax error, statement will be ignored.11 run;a.SAS identifies a syntax error at the position of the VAR statement.b.SAS is reading VAR as an option in the PROC PRINT statement.c.SAS has stopped processing the program because of errors.d.all of the aboveCorrect answer:dBecause there is a missing semicolon at the end of the PROC PRINT statement, SAS interprets VAR as an option in PROC PRINT and finds a syntax error at that location. SAS stops processing programs when it encounters a syntax error.Chapter 4: Creating List Reports Answer Key 1.Which PROC PRINT step below creates the following output?Correct answer:cThe DATA= option specifies the data set that you are listing, and the ID statement replaces the Obs column with the specified variable. The VAR statement specifies variables and controls the order in which they appear, and the WHERE statement selects rows based on a condition. The LABEL option in the PROC PRINT statement causes the labels that are specified in the LABEL statement to be displayed.2.Which of the following PROC PRINT steps is correct if labels are not stored with thedata set?Correct aanswer:You use the DATA= option to specify the data set to be printed. The LABEL optionspecifies that variable labels appear in output instead of variable names.3.Which of the following statements selects from a data set only those observations forwhich the value of the variable Style is RANCH, SPLIT, or TWOSTORY?Correct answer:dIn the WHERE statement, the IN operator enables you to select observations based on several values. You specify values in parentheses and separate them by spaces or commas. Character values must be enclosed in quotation marks and must be in the same case as in the data set.4.If you want to sort your data and create a temporary data set named Calc to store thesorted data, which of the following steps should you submit?Correct answer:cIn a PROC SORT step, you specify the DATA= option to specify the data set to sort. The OUT= option specifies an output data set. The required BY statement specifies the variable(s) to use in sorting the data.5.Which options are used to create the following PROC PRINT output?13:27 Monday, March 22, 1999 Patient Arterial Heart Cardiac Urinary203 88 95 66 11054 83 183 95 0664 72 111 332 12210 74 97 369 0101 80 130 291 0a.the DATE system option and the LABEL option in PROC PRINTb.the DATE and NONUMBER system options and the DOUBLE and NOOBSoptions in PROC PRINTc.the DATE and NONUMBER system options and the DOUBLE option inPROC PRINTd.the DATE and NONUMBER system options and the NOOBS option in PROCPRINTCorrect answer:bThe DATE and NONUMBER system options cause the output to appear with the date but without page numbers. In the PROC PRINT step, the DOUBLE option specifies double spacing, and the NOOBS option removes the default Obs column.6.Which of the following statements can you use in a PROC PRINT step to create thisoutput?Correct answer:dYou do not need to name the variables in a VAR statement if you specify them in the SUM statement, but you can. If you choose not to name the variables in the VAR statement as well, then the SUM statement determines the order of the variables in the output.7.What happens if you submit the following program?proc sort data=clinic.diabetes;run;proc print data=clinic.diabetes;var age height weight pulse;where sex='F';run;a.The PROC PRINT step runs successfully, printing observations in their sortedorder.b.The PROC SORT step permanently sorts the input data set.c.The PROC SORT step generates errors and stops processing, but the PROCPRINT step runs successfully, printing observations in their original (unsorted)order.d.The PROC SORT step runs successfully, but the PROC PRINT step generateserrors and stops processing.Correct answer:cThe BY statement is required in PROC SORT. Without it, the PROC SORT step fails. However, the PROC PRINT step prints the original data set as requested.8.If you submit the following program, which output does it create?proc sort data=finance.loans out=work.loans;by months amount;run;proc print data=work.loans noobs; var months;sum amount payment;where months<360;run;a.b.c.d.Correct answer:aColumn totals appear at the end of the report in the same format as the values of the variables, so b is incorrect. Work.Loans is sorted by Month and Amount, so c isincorrect. The program sums both Amount and Payment, so d is incorrect.9.Choose the statement below that selects rows which•the amount is less than or equal to $5000•the account is 101-1092 or the rate equals 0.095.Correct answer:cTo ensure that the compound expression is evaluated correctly, you can use parentheses to groupaccount='101-1092' or rate eq 0.095OBS Account Amount Rate MonthsPayment1 101-1092 $22,000 10.00%60 $467.432 101-1731 $114,0009.50% 360 $958.573 101-1289 $10,000 10.50%36 $325.024 101-3144 $3,500 10.50%12 $308.525 103-1135 $8,700 10.50%24 $403.476 103-1994 $18,500 10.00%60 $393.077 103-2335 $5,000 10.50%48 $128.028 103-3864 $87,500 9.50% 360 $735.759 103-3891 $30,000 9.75% 360 $257.75For example, from the data set above, a and b above select observations 2 and 8 (those that have a rate of 0.095); c selects no observations; and d selects observations 4 and 7 (those that have an amount less than or equal to 5000).10.What does PROC PRINT display by default?a.PROC PRINT does not create a default report; you must specify the rows andcolumns to be displayed.b.PROC PRINT displays all observations and variables in the data set. If youwant an additional column for observation numbers, you can request it.c.PROC PRINT displays columns in the following order: a column forobservation numbers, all character variables, and all numeric variables.d.PROC PRINT displays all observations and variables in the data set, a columnfor observation numbers on the far left, and variables in the order in which they occur in the data set.Correct answer:dYou can remove the column for observation numbers. You can also specify the variables you want, and you can select observations according to conditions.Chapter 5: Creating SAS Data Sets from Raw Data Answer Key1.Which SAS statement associates the fileref Crime with the raw data fileC:\States\Data\Crime?a.filename crime 'c:\states\data\crime';b.filename crime c:\states\data\crime;c.fileref crime 'c:\states\data\crime';d.filename 'c:\states\data\crime' crime; Correct aanswer:Before you can read your raw data, you must reference the raw data file by creating afileref. You assign a fileref by using a FILENAME statement in the same way thatyou assign a libref by using a LIBNAME statement.2.Filerefs remain in effect untila.you change them.b.you cancel them.c.you end your SAS session.d.all of the aboveCorrect answer:dLike LIBNAME statements, FILENAME statements are global; they remain in effect until you change them, cancel them, or end your SAS session.3.Which statement identifies the name of a raw data file to be read with the filerefProducts and specifies that the DATA step read only records 1-15?a.infile products obs 15;b.infile products obs=15;c.input products obs=15;d.input products 1-15;Correct answer:bYou use an INFILE statement to specify the raw data file to be read. You can specify a fileref or an actual filename (in quotation marks). The OBS= option in the INFILE statement enables you to process only records 1 through n.4.Which of the following programs correctly writes the observations from the data setbelow to a raw data file?Correct answer:dThe keyword _NULL_ in the DATA statement enables you to use the power of the DATA step without actually creating a SAS data set. You use the FILE and PUT statements to write out the observations from a SAS data set to a raw data file. The FILE statement specifies the raw data file and the PUT statement describes the lines towrite to the raw data file. The filename and location that are specified in the FILE statement must be enclosed in quotation marks.5.Which raw data file can be read using column input?a.b.c.d.all of the aboveCorrect answer:bColumn input is appropriate only in some situations. When you use column input, your data must be standard character or numeric values, and they must be in fixed fields. That is, values for a particular variable must be in the same location in all records.6.Which program creates the output shown below?Correct answer:aThe INPUT statement creates a variable using the name that you assign to each field. Therefore, when you write an INPUT statement, you need to specify the variable names exactly as you want them to appear in the SAS data set.7.Which statement correctly reads the fields in the following order: StockNumber,Price, Item, Finish, Style?Field Name Start Column End Column Data TypeStockNumber 1 3 characterFinish 5 9 characterStyle 11 18 characterItem 20 24 characterPrice 27 32 numericCorrec t answer:bYou can use column input to read fields in any order. You must specify the variable name to be created, identify character values with a $, and name the correct starting column and ending column for each field.8.Which statement correctly re-defines the values of the variable Income as 100percent higher?a.income=income*1.00;b.income=income+(income*2.00);c.income=income*2;d.income=*2;Correct answer:cTo re-define the values of the variable Income in an Assignment statement, you specify the variable name on the left side of the equal sign and an appropriate expression including the variable name on the right side of the equal sign.9.Which program correctly reads instream data?a.data finance.newloan;input datalines;if country='JAPAN';MonthAvg=amount/12;1998 US CARS 194324.121998 US TRUCKS 142290.301998 CANADA CARS 10483.441998 CANADA TRUCKS 93543.641998 MEXICO CARS 22500.571998 MEXICO TRUCKS 10098.881998 JAPAN CARS 15066.431998 JAPAN TRUCKS 40700.34;b.data finance.newloan;input Year 1-4 Country $ 6-11Vehicle $ 13-18 Amount 20-28;if country='JAPAN';MonthAvg=amount/12;datalines;run;c.data finance.newloan;input Year 1-4 Country 6-11Vehicle 13-18 Amount 20-28;if country='JAPAN';MonthAvg=amount/12;datalines;1998 US CARS 194324.121998 US TRUCKS 142290.301998 CANADA CARS 10483.441998 CANADA TRUCKS 93543.641998 MEXICO CARS 22500.571998 MEXICO TRUCKS 10098.881998 JAPAN CARS 15066.431998 JAPAN TRUCKS 40700.34;d.data finance.newloan;input Year 1-4 Country $ 6-11Vehicle $ 13-18 Amount 20-28;if country='JAPAN';MonthAvg=amount/12;datalines;1998 US CARS 194324.121998 US TRUCKS 142290.301998 CANADA CARS 10483.441998 CANADA TRUCKS 93543.641998 MEXICO CARS 22500.571998 MEXICO TRUCKS 10098.881998 JAPAN CARS 15066.431998 JAPAN TRUCKS 40700.34;Correct answer:dTo read instream data, you specify a DATALINES statement and data lines, followed by a null statement (single semicolon) to indicate the end of the input data. Program a contains no DATALINES statement, and the INPUT statement doesn't specify the fields to read. Program b contains no data lines, and the INPUT statement in program c doesn't specify the necessary dollar signs for the character variables Country and Vehicle.10.Which SAS statement subsets the raw data shown below so that only the observationsin which Sex (in the second field) has a value of F are processed?a.if sex=f;b.if sex=F;c.if sex='F';d. a or bCorrect answer:cTo subset data, you can use a subsetting IF statement in any DATA step to process only those observations that meet a specified condition. Because Sex is a character variable, the value F must be enclosed in quotation marks and must be in the same case as in the data set.Chapter 6: Understanding DATA Step Processing Answer Key1.Which of the following is not created during the compilation phase?。
统计专业可以考的证书
统计专业的学生可以考取一些相关的证书，以提高自己的专业能力和竞争力，以下是一些常见的证书：
统计学考试证书：该证书是由教育部主管的全国统一考试机构颁发的，考试内容包括数理统计学、概率论、统计方法等相关知识。
SAS认证：SAS是统计分析软件，该认证证明持证者熟练掌握SAS的应用和相关技能，包括基础技能、数据管理和数据分析等方面。
CFA认证：CFA是金融分析师认证，考试内容包括财务报表分析、投资组合管理、估值方法等知识点，该证书能够证明持证者在金融领域具有较高的专业水平。
CPA认证：CPA是注册会计师认证，考试内容包括财务报表分析、财务管理、税法等知识点，持证者可以从事审计、税务、财务等方面的工作。
数据分析师认证：该认证是由一些专业机构或公司颁发的，证明持证者掌握数据分析相关的技能和工具，包括数据清洗、数据分析和数据可视化等方面。
这些证书能够提高统计专业学生的专业能力和市场竞争力，同时也能够为未来的职业发展打下坚实的基础。
SASO认证最详细操作流程和步骤
沙特SASO认证的操作流程和操作步骤，因为发证机构的不同，产品的不同，要求也都会有不同，比如发证机构不同，流程也会不同，NEMKO、AI、AENOR、UL这几个发证机构，他们对于低风险产品是不要验货的，既然是不要验货，那跟其他要验货机构的流程是不一致的，下面我讲讲低风险产品不要验货的机构的SASO认证流程和操作步骤：一步，产品测试。
先是在工厂没有测试报告的情况下，可以委托具有CNAS17025资质的实验室，去做一份第三方测试报告，这个报告只要安全性能或者物理性能方面的就行，如果是电子产品，只要LVD安全方面的就行，因为沙特就没有强制EMC电磁兼容方面的测试要求，所以用市电驱动的电子产品做测试的时候，可以不考虑做EMC电磁兼容，只要做LVD 安全性能方面的测试就可以了。
如果你的产品已经做了美国UL认证、德国TUV认证、德国GS认证，欧盟CE认证等，只要测试标准和测试项目也能符合沙特当地的要求，电压是220V或380V和频率是60HZ，而且出具这些证书的实验室，是CNAS资质的实验室，那么这些认证的测试报告是可以接受，不过这个地方有个前提，那就是出具测试报告的日期，不能超过3年，有的时候机构只能接受2年内的测试报告，这一点要注意，能接受3年的测试报告的机构不多，尽量控制在2年内的。
有的客户会说，我们是中国的企业，如果工厂做了CCC认证，这个3C认证的测试报告是否也能接受？这一点我要告诉你，如果是电子产品，3C认证的测试报告是不能完全接受的，因为中国的电源频率是50Hz，沙特的电源频率是60Hz，他们不接受50Hz 的频率，所以电子产品的3C认证测试报告，须要补做电源频率差异测试，补做频率测试后，这份报告就可以完全接受了。
其他不是电子产品的3C认证测试报告，发证机构是可以接受的。
不过这个地方也有个前提，那就是这些3C测试报告，一定要翻译成英文，不然沙特那边的工程师看不懂中文，没法接受。
有了上述所说的测试报告后，就可以进行下一步工作：二步：申请SASO证书申请人提供：箱单、发票、申请表、测试报告、产品照片，包装照片，我们向机构提出申请，机构在审核资料后，如果没有问题，就会直接签发草稿证书和收费通知，客户确认草稿，如果没有问题，就付款，然后提供水单给我们，我们就安排出正本寄出给客户。
沙特SASO认证是什么？
沙特SASO认证是什么？沙特SASO认证是什么？什么是SASO认证事实上，SASe)标准中有很多是在相关的国际电工委员会(IEC)等国际组织的的安全标准基础上建立的。
像很多其他的国家一样，沙特阿拉伯根据自己国家的民用及工业电压，地理及气候环境，民族宗教习惯等在标准中添加了一些特有的项目。
为了实现保护消费者的目的,SASO标准不只针对从国外进口的产品,对于在沙特阿拉伯本土生产的产品也同样适用。
SASO认证的必要性沙特阿拉伯工业及商务部及SASO要求所有SASO认证标准包含的产品在进入沙特海关时有SASO认证证书。
没有SASO证书的产品会被沙特港口海关拒绝入境。
产品向沙特出口，货物入关时要出具SASo认证证书，沙特阿拉伯标准组织的技术人员将对证书进行检查;如不能出具SASo证书，产品将会被拒绝入境或抽样到沙特阿拉伯工业及商务部或沙特阿拉伯标准组织的实验室进行检测,如检测不合格产品将会被拒绝入境,一切费用由出口企业承担。
SASO认证的产品范围SASe）认证包含所有成人及儿童在住所，办公或娱乐场所使用的产品，所有机动车及零配件，以及建筑产品。
这些产品主要可以分为以下类别：空调SAS0、电池SASC）、化妆品SAS0、玩具SAS0、压缩机SAS0、风扇SAS0、家用电器SASO,电线电缆SASC）、传真机SAS0、灯具SASO、光电源SASO、电梯SASO x发电机SASO x办公用电子电器设备SASO、个人电脑SASO s电源SASO、汽车配件SASO.陶瓷SAS0、音响SAS0、功放机SAS0、会议系统SAS0、调音台SASo沙特各城市都采用较低电压，分为127伏和220伏（利雅德为235伏）两种，皆为60赫兹；但在麦加及工业区系采用较高电压，有220伏及380伏两种，亦为60赫兹.一般家庭及办公室同时备有I1O伏(即指127伏)及220伏两种电插座以供不同电压的电器产品使用，一般而言，冷气机、洗衣机多用220伏，小家电多用110伏。
SAS职业角色认证体系
角色定 序号 位 技能 主要职责描述 认证类型 SAS程序员 （基础） SAS程序员 （高级） SAS业务分析 （基础）
1
读取和管理数据，以 SAS程序 SAS基础，编 及进行复杂的查询和 员 程开发 分析
2
SAS业务 业务分析 分析师
读取已有的信息，并 通过图形界面创建我 自己的报表和进行相 应的分析
(SPAE43) 》 两种，要通过相应角色的高级考试必须先通过基数
SAS程序员 （基础）
《为组织创建商务智能2: 其他主题 (SBA2)》 《设计、调整和维护SAS OLAP立方体 (SBAOLP43)》 《SAS Enterprise Guide 1：查询和报 告 (EG1)》 《SAS平台管理：入门 (SPAG43)》 《SAS平台管理：快速入门 (SPAFT)》 《SAS编程 1：基础 (PRG1)》 《SAS Enterprise Guide 1：查询和报 告 (EG1)》 《SAS Enterprise Guide：管理 SAS程序员 （基础）
SAS EG管理 （高级） 注解：SAS认证考试均按照角色分为基础级和高级两种，要通过相应角色的高级考试必须先通过基数 级考试并取得基础级认证。
安装、配置、管理和 维护SAS Enterprise Guide
业角色认证体系
课程 《SAS编程 1：基础 (PRG1)》 《SAS编程 2：数据处理技术 (PRG2)》 《SAS宏语言 1：基础 (MAC1)》 《SAS SQL 1：基础 (SQL1)》 《SAS编程 3：高级技巧 (PRG3) 》 《SAS Enterprise Guide 1：查询和报 告 (EG1)》 《SAS Enterprise Guide 2: 高级任 务和查询 (EG2)》 《SAS Enterprise Guide：方差分析， 回归，逻辑回归 (EGBS42) 》 《SAS EG高级编程技术 (EGSP43)》 《SAS编程 1：基础 (PRG1)》 《统计1：方差分析，回归和逻辑回归 介绍 (ST192)》 《统计2：方差分析和回归 (ST293)》 《使用逻辑回归分析分类数据 (CDALR92)》 《SAS编程 1：基础 (PRG1)》 《SAS编程 2：数据处理技术 (PRG2)》 《通过SAS编程进行预测 (FETSP)》 《使用SAS Forecast Sever软件进行预 测 (FSTU41)》 《决策树建模 (DMDT53)》 《使用SAS Enterprise Miner进行应用 分析 (AAEM61)》 《使用逻辑回归进行预测建模 (PMLR92)》 使用SAS Enterprise Miner进行高级 SAS程序员 预测建模 (PMAD61) （基础） 《SAS编程 1：基础 (PRG1)》 《SAS Data Integration Studio 1： 基础 (DI1)》 《SAS Data Integration Studio 2： 附加主题 (DI2)》 《SAS Enterprise Guide 1：查询和报 告 (EG1) 》 《SAS Business Intelligence Reporting1：基础 (SBU1)》 《SAS Business Intelligence Reporting2：其他主题 (SBU2)》 《SAS报表制作 1：使用过程和ODS SAS程序员 (RPT1)》 （基础） 《SAS Enterprise Guide 1：查询和报 告 (EG1)》 《为组织创建商业智能1：概要 (SBA1) 》 预备条件
沙特SASO认证是什么
沙特SASO认证是什么概述沙特SASO认证（Saudi Arabian Standards Organization Certification）是指在沙特阿拉伯国内进行的产品合规认证，适用于出口到该国的产品。
沙特SASO认证证明该产品符合沙特阿拉伯国内的安全、健康和环保法规要求。
认证标准沙特SASO认证包括了许多标准，具体认证标准因产品而异。
一些主要的沙特SASO认证标准如下：•SASO 1011：普通住宅用电器标准•SASO 2670：人造板标准•SASO 2663：塑料管道系统标准•SASO 2681：玻璃产品安全标准•SASO 2875：无损检测设备标准认证流程沙特SASO认证流程分为以下几个步骤：1.确认认证标准：确认需要认证的产品对应的认证标准，以便进行相应的测试和验证。
2.测试和审核：通过实验和测试，验证产品是否符合认证标准。
审核过程会包括产品规格说明、图纸以及其它相关文件的审核。
3.检测报告：审核通过后，可以对产品进行检测。
测试和检测通常由第三方认证机构完成。
4.认证发证：一旦检测结果合格，证书就会被发放。
认证时间和费用沙特SASO认证的时间和费用因产品和认证机构而异。
认证时间通常为几个月，而费用则由认证机构决定。
由于沙特阿拉伯政府对进口产品的安全、健康和环保问题非常重视，因此准备充分和提前规划至关重要。
总结沙特SASO认证是出口到沙特阿拉伯的产品所需要的合规认证，证明该产品符合沙特国内的安全、健康和环保法规要求。
认证标准因产品而异，认证流程包括确认标准、测试和审核、检测报告和认证发证。
认证时间和费用取决于产品和认证机构。
成功获得沙特SASO认证，将有效提高产品的市场竞争力和信誉度。
saso认证范围 -回复
saso认证范围-回复SASO认证范围包括哪些内容？SASO认证是沙特阿拉伯的一种商品合规性认证，按照沙特阿拉伯标准组织的规定，商品必须符合特定的技术和质量标准，才能在沙特阿拉伯市场上销售和流通。
SASO认证范围广泛，涵盖了许多领域和商品类型。
首先，SASO认证适用于工业产品。
这些产品包括电器和电子设备、化学产品、建筑材料、机械设备、汽车和汽车零部件等。
这些产品必须满足沙特阿拉伯标准组织制定的技术要求和质量标准，以确保其安全性、可靠性和性能。
其次，SASO认证也适用于消费品。
这些产品包括食品和饮料、化妆品、纺织品、家居用品、玩具和儿童用品等。
对于食品和饮料，SASO认证要求符合沙特阿拉伯的卫生和食品安全标准。
对于化妆品和纺织品，SASO 认证要求符合相应的标准和规定，以确保产品的质量和安全性。
此外，SASO认证还适用于能源产品和设备。
这些产品包括石油和石油产品、太阳能和风能设备、电力设备等。
对于能源产品和设备，SASO认证要求符合沙特阿拉伯的技术要求和能源效率标准，以确保其符合环境保护和可持续发展的要求。
除了以上提到的范围，SASO认证还包括一些特殊的产品和领域。
例如，SASO认证也适用于医疗器械和药品。
对于医疗器械，SASO认证要求符合沙特阿拉伯的相关法规和标准，以确保其安全性和有效性。
对于药品，SASO认证要求符合沙特阿拉伯的药物注册和审批要求。
除了产品范围，SASO认证还包括质量管理体系的认证。
企业可以通过ISO 9001认证来证明其质量管理体系符合国际标准，并能够持续不断地提供符合要求的产品和服务。
在申请SASO认证时，企业需要进行一系列的步骤和程序。
首先，企业需要收集和准备相关的文件和证明材料，如产品规格、测试报告、质量文件等。
然后，企业需要提交申请并支付相应的费用。
申请提交后，认证机构将进行评估和审核，包括现场检查和样品测试。
最后，认证机构将根据评估结果和标准要求给予认证证书，证明该企业的产品符合SASO 认证标准。
SAS全球专业认证计划
SAS全球专业认证计划什么是SAS?美国SAS软件研究所(SAS Institute Inc.)创建于1976年，总部在美国北卡州。
SAS系统是由SAS公司开发的面向企业端到端的商业智能解决方案平台，旨在为用户提供最富有竞争力的武器，让用户为自己的商务发展做出最正确、最有效的决策，将杂乱无章的原始数据转化为富有价值的信息和知识，令用户在商务竞争的浪潮中，永远把握正确的航向和速度发展、延伸。
SAS系统迄今服务于118个国家，全球有42,000多家企业，包括财富500强中90%的企业都在使用SAS商业智能解决方案，广泛应用于医药、金融、商务、电讯、环境、交通、能源、林业、企业管理、统计等众多行业。
为什么要获得SAS 认证?SAS以其领先的技术和完善的服务著称于世，经过20多年的不断发展完善，SAS系统已由最初的统计分析软件发展成为面向企业端到端的商业智能解决方案平台。
由于SAS系统无可比拟的优越性，在数据挖掘技术、商业智能领域和统计分析领域中几乎处于垄断地位，是国际上最流行的标准企业管理软件。
在此仅举一例如下：在以苛刻严格著称于世的美国FDA新药审批程序中，新药试验结果的统计分析规定只能用SAS进行，其他软件的计算结果一律无效。
在全球经济支柱的北美，在第一时间内能够获得或者找到最有价值的信息和资源，对各大企业至关重要，而SAS则是目前能够实现这一目标最流行的工具，故而以惊人的速度得到快速、蓬勃的发展，获得SAS认证并有丰富经验的人才在职场上供不应求。
因此，在欧美等国的职场上流行一句话，“If you have a SAS certification, You will never lose your job”。
SAS专业认证是一项拥有极高国际声誉的专业认证，获取SAS全球专业认证，为您在数据挖掘、分析方法论领域积累丰富经验奠定良好的基础，使您在竞争异常激烈的人才市场中脱颖而出，从而找到展现自身才华的工作。
SAS Base认证考试(70真题 答案详解)
SAS Base认证考试—70题SAS分多个认证种类：base，advanced，clinic等，但大多需要先通过base认证。
但凡这类商业组织提供的考证，基本都是题库型，所以想考过难度并不大。
对于只想拿SAS认证的人，如果熟练掌握网上流传甚广的sas真题70题，通过base认证基本就没问题。
Q 11. The following SAS program is submitted:data WORK.TOTAL;set WORK.SALARY;by Department Gender;if First.<_insert_code_> then Payroll=0;Payroll+Wagerate;if Last.<_insert_code_>;run;The SAS data set WORK.SALARY is currently ordered by Gender within Department.Which inserted code will accumulate subtotals for each Gender within Department?A. GenderB. DepartmentC. Gender DepartmentD. Department Gender答案：A本题知识点：自动变量在SAS读取数据时，在PDV过程中会产生很多自动变量，在输出的数据集中是不可见的。
· FIRST.VARIABLE：同一个BY变量（组），若新的变量值第一次出现时，其first.variable值为1。
· LAST.VARIABLE：同一个BY变量（组），若新的变量值最后一次出现时，其last.variable值为1。
另外，在BY变量右面有多个变量时，先按第一个变量排序，若第一个变量的观测存在重复时，才按第二个变量排序。
Q 2Given the following raw data records in TEXTFILE.TXT:----|----10---|----20---|----30John,FEB,13,25,14,27,FinalJohn,MAR,26,17,29,11,23,CurrentTina,FEB,15,18,12,13,FinalTina,MAR,29,14,19,27,20,CurrentThe following output is desired:Obs Name Month Status Week1 Week2 Week3 Week4 Week51 John FEB Final $13 $25 $14 $27 .2 John MAR Current $26 $17 $29 $11 $233 Tina FEB Final $15 $18 $12 $13 .4 Tina MAR Current $29 $14 $19 $27 $20Which SAS program correctly produces the desired output?A. data WORK.NUMBERS;length Name $ 4 Month $ 3 Status $ 7;infile 'TEXTFILE.TXT' dsd;input Name $ Month $;if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;else if Month='MAR' then input Week1 Week2 Week3 Week4 Week5 Status $; format Week1-Week5 dollar6.;run;proc print data=WORK.NUMBERS;run;B. data WORK.NUMBERS;length Name $ 4 Month $ 3 Status $ 7;infile 'TEXTFILE.TXT' dlm=',' missover;input Name $ Month $;if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;else if Month='MAR' then input Week1 Week2 Week3 Week4 Week5 Status $; format Week1-Week5 dollar6.;run;proc print data=WORK.NUMBERS;run;C. data WORK.NUMBERS;length Name $ 4 Month $ 3 Status $ 7;infile 'TEXTFILE.TXT' dlm=',';input Name $ Month $ @;if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;else if Month='MAR' then input Week1 Week2 Week3 Week4 Week5 Status $; format Week1-Week5 dollar6.;run;proc print data=WORK.NUMBERS;run;D. data WORK.NUMBERS;length Name $ 4 Month $ 3 Status $ 7;infile 'TEXTFILE.TXT' dsd @;input Name $ Month $;if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;else if Month='MAR' then input Week1 Week2 Week3 Week4 Week5 Status $; format Week1-Week5 dollar6.;run;proc print data=WORK.NUMBERS;run;答案：C本题知识点：INFILE语句与指示器@、@@INFILE filespecification options;其中，filespecification用来定义文件, options给出选择项;· filespecification有以下三种形式:①、fileref(文件标志)②、’filename’(文件名)③、CARDS指明输入的数据，紧跟着CARDS语句·下列选择项(options)可以出现在INFILE语句中:①、COLUMN=variable或COL=variable 定义一个变量, 其值是指针所在的当前列位置。
sas 初级证书
sas 初级证书
SAS初级证书是SAS认证体系中的基础级别，主要针对SAS软件的基本操作和数据处理技能进行认证。
通过获得SAS初级证书，持有人可以证明自己具备使用SAS软件进行数据处理和分析的基本能力，具备一定的商业智能和统计分析基础。
要获得SAS初级证书，需要进行相关的考试。
考试内容涵盖了SAS软件的基本操作、数据处理、数据可视化等方面的知识。
考生需要通过考试，并满足一定的分数要求，才能获得SAS初级证书。
获得SAS初级证书后，持有人可以更加自信地使用SAS软件进行数据处理和分析，提高工作效率和质量。
同时，该证书也可以作为持有人进入商业智能和统计分析领域的敲门砖，为其职业发展打下基础。
sasb证书 study guide
SASB证书 Study Guide目录一、什么是SASB证书？二、SASB证书的学习指南2.1 SASB证书考试内容2.2 如何准备SASB证书考试2.3 学习资料推荐三、SASB证书的职业前景四、总结一、什么是SASB证书？SASB（Sustainability Accounting Standards Board）是一家专门制定企业可持续发展报告标准的组织，其目标是为投资者和企业提供一个全面的可持续发展报告框架，使得投资者可以更好地了解企业在环境、社会和治理方面的表现。
SASB证书是由SASB组织颁发的专业证书，主要面向从事可持续发展报告的从业人员，要求具备丰富的财务会计和可持续发展领域的知识。
二、SASB证书的学习指南2.1 SASB证书考试内容SASB证书考试主要涵盖以下几个方面的内容：1. 可持续发展报告的基本原理和概念2. 环境、社会和治理指标的制定和应用3. 可持续发展报告的编制和审核流程4. 可持续发展报告对企业治理和投资者决策的影响这些内容需要考生具备扎实的财务会计理论知识，同时对企业可持续发展报告的编制和分析有一定的了解。
2.2 如何准备SASB证书考试为了顺利通过SASB证书考试，考生需要做好以下几方面的准备：1. 阅读SASB官方发布的相关书籍和教材，深入理解可持续发展报告的理论与实践知识；2. 参加SASB官方组织的培训课程，学习专业的可持续发展报告知识和技能；3. 参加模拟考试，熟悉考试形式和内容，增强应试能力；4. 寻找SASB证书的备考资料，包括考试指南、历年真题和解答等，进行系统复习。
2.3 学习资料推荐针对SASB证书考试的学习资料，建议考生选择以下几种类型的资料进行学习和复习：1. 《SASB证书考试指南》2. 《SASB证书考试真题及解析》3. 《SASB证书考试辅导教材》4. 可持续发展报告理论与实践相关书籍通过充分准备和系统复习，相信考生一定能够顺利通过SASB证书考试。
sas70标准介绍
SAS70标准是一种质量控制标准，用于评估和验证数据处理和数据存储设施的保密性、完整性和可用性。
该标准由美国商务部下属的统计协会（SAS Institute）制定，并得到了广泛的应用和认可。
SAS70标准要求数据处理和数据存储设施满足一系列严格的要求，包括物理安全、网络安全、人员管理、备份和恢复策略等。
这些要求旨在确保数据不被篡改、丢失或泄露给未经授权的人员。
SAS70标准的认证过程通常涉及定期审计和评估设施的合规性，以确保符合标准的要求。
实施SAS70标准的好处包括提高数据处理和数据存储设施的可靠性和安全性，降低数据泄露和丢失的风险，增强客户的信任和信心，以及减少数据泄露可能对业务产生的不利影响。
除了SAS70标准，还有其他质量控制标准和认证机构也涉及数据处理和数据存储设施的评估和认证，例如ISO 27001和CSO等。
这些标准和SAS70标准一样，也关注数据的保密性、完整性和可用性，但在评估方法、标准和流程方面有所不同。
因此，根据不同需求和实际情况，选择合适的标准和认证机构进行评估和认证是必要的。
此外，为了适应数字化转型和大数据时代的数据处理和存储需求，SAS Institute等数据处理和存储厂商也在不断更新和完善其产品和解决方案，以满足客户在数据安全、性能、可靠性和易用性等方面的需求。
总之，SAS70标准是一种重要的质量控制标准，用于评估和验证数据处理和数据存储设施的保密性、完整性和可用性。
实施SAS70标准可以带来一系列好处，并得到广泛的应用和认可。
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SAS 认证报名 STP 5 选择考点
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SAS 认证报名 STP 6 要准备充分啊，不要记错日期
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SAS
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SAS 认证报名 STP 7 双币卡，当然可以试一下其他卡
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SAS 认证报名 STP 8 一步步付款了，就 OK 了
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SAS 考试报名的相关信息，进入 “PEARSON VUE”报名
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在该页面点击创建账户 / 直接登录已有账户
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创建账号 STP 1
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创建账号 STP 2 此处姓名填写非常重要
如果已有SAS Candidate ID 则填写，否则选择右图
First Name ：名字的拼音 Last Name ：姓的拼音 必须和有效证件一直，参 加考试的时候进行检查， 并且是唯一检查方式
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创建账号 STP 3 电子邮件接收信息的有效方式
接收信息必备
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创建账号 STP 4 手机号码的重要性就不说了
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创建账号 STP 5 登录账号设置
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在该页面点击进行 SAS 考试报名
此页面可以直接在以下网址点击登录 /sas/
SAS 认证报名IMC搜索 SAS 官网IMC进入 SAS 官网后，点击底部认证
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在 SAS 的认证界面了解详细信息，点击进入 SAS BASE
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此页面可以了解 SAS BASE 考试的详细信息
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SAS BASE 认证涉及的内容
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点击“sample questions”查看 SAS 给出的考试示例题
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SAS 认证报名 STP 1 选择要考的 SAS 认证
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SAS 认证报名 STP 2 竟然支持日文，尼玛
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SAS 认证报名 STP 3 180 $，不是RMB
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SAS 认证报名 STP 4 确定不和 Advance 一起考？
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SAS 认证报名 STP 5 选择考试地区及城市
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如需 SAS 认证指导，请联系
QQ : 306163604
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