牙膏销售量与销售价格、广告费用等数据

销售周期公司销售价格/元其他厂家平均价格/元广告费用/百万元价格差/元销售量/百万支

1 3.85 3.80 5.50-0.057.38

2 3.75 4.00 6.750.258.51

3 3.70 4.307.250.609.52

4 3.60 3.70 5.500.107.50

5 3.60 3.857.000.259.33

6 3.60 3.80 6.500.208.28

7 3.60 3.75 6.750.158.75

8 3.80 3.85 5.250.057.87

9 3.80 3.65 5.25-0.157.10

10 3.85 4.00 6.000.158.00

11 3.90 4.10 6.500.207.89

12 3.90 4.00 6.250.108.15

13 3.70 4.107.000.409.10

14 3.75 4.20 6.900.458.86

15 3.75 4.10 6.800.358.90

16 3.80 4.10 6.800.308.87

17 3.70 4.207.100.509.26

18 3.80 4.307.000.509.00

19 3.70 4.10 6.800.408.75

20 3.80 3.75 6.50-0.057.95

21 3.80 3.75 6.25-0.057.65

22 3.75 3.65 6.00-0.107.27

23 3.70 3.90 6.500.208.00

24 3.55 3.657.000.108.50

25 3.60 4.10 6.800.508.75

26 3.65 4.25 6.800.609.21

27 3.70 3.65 6.50-0.058.27

28 3.75 3.75 5.750.007.67

29 3.80 3.85 5.800.057.93

30 3.70 4.25 6.800.559.26