投资练习题含答案

1、The efficient frontier of risky assets isA)the portion of the investment opportunity set that lies above the global minimum variance portfolio.B)the portion of the investment opportunity set that represents the highest standard deviations.C)the portion of the investment opportunity set which includes the portfolios with the lowest standard deviation.D)the set of portfolios that have zero standard deviation.E)both A and B are true.2、The Capital Allocation Line provided by a risk-free security and N risky securities is ______A) the line that connects the risk-free rate and the global minimum-variance portfolio of the risky securities.B) the line that connects the risk-free rate and the portfolio of the risky securities that has the highest expected return on the efficient frontier.C) the line tangent to the efficient frontier of risky securities drawn from the risk-free rate.D) the horizontal line drawn from the risk-free rate.E) none of the above.3、Consider an investment opportunity set formed with two securitiesthat are perfectly negatively correlated. The global minimum variance portfolio has a standard deviation that is always_____A) greater than zero.B) equal to zero.C) equal to the sum of the securities' standard deviations.D) equal to -1.E) none of the above.4、Which of the following statements is (are) true regarding the variance of a portfolio of two risky securitiesA) The higher the coefficient of correlation between securities, the greater the reduction in the portfolio variance.B) There is a linear relationship between the securities' coefficient of correlation and the portfolio variance.C) The degree to which the portfolio variance is reduced depends on the degree of correlation between securities.D) A and B.E) A and C.5、Efficient portfolios of N risky securities are portfolios thatA) are formed with the securities that have the highest rates of return regardless of their standard deviations.B) have the highest rates of return for a given level of risk.C) are selected from those securities with the lowest standard deviations regardless of their returns.D) have the highest risk and rates of return and the highest standard deviations.E) have the lowest standard deviations and the lowest rates of return.6、As diversification increases, the total variance of a portfolio approaches ____________.A) 0 B) 1 C) the variance of the market portfolioD) infinity E) none of the above7、The index model was first suggested by ____________.A) Graham B) Markowitz C) Miller D)SharpeE) none of the above8、.A single-index model uses __________ as a proxy for the systematic risk factor.A) a market index, such as the S&P 500B) the current account deficitC) the growth rate in GNPD) the unemployment rateE) none of the above9、According to the index model, covariances among security pairs areA) due to the influence of a single common factor represented by the market index returnB) extremely difficult to calculateC) related to industry-specific eventsD) usually positiveE) A and D10、In a factor model, the return on a stock in a particular period will be related to _________.A) firm-specific events B) macroeconomic events C)the error termD) both A and B E) neither A nor B11、Which of the following statement(s) is (are) true regarding the selection of a portfolio from those that lie on the Capital Allocation LineA) Less risk-averse investors will invest more in the risk-free security and less in the optimal risky portfolio than more risk-averse investors.B) More risk-averse investors will invest less in the optimal risky portfolio and more in the risk-free security than lessrisk-averse investors.C) Investors choose the portfolio that maximizes their expected utility.D) A and C.E) B and C.12、An investor who wishes to form a portfolio that lies to the right of the optimal risky portfolio on the Capital Allocation Line must:A) lend some of her money at the risk-free rate and invest the remainder in the optimal risky portfolio.B) borrow some money at the risk-free rate and invest in the optimal risky portfolio.C) invest only in risky securities.D) such a portfolio cannot be formed.E) B and C13、Portfolio theory as described by Markowitz is most concerned with:A) the elimination of systematic risk.B) the effect of diversification on portfolio risk.C) the identification of unsystematic risk.D) active portfolio management to enhance returns.E) none of the above.14、The measure of risk in a Markowitz efficient frontier is:A) specific risk.B) standard deviation of returns.C) reinvestment risk.D) beta.E) none of the above.15、A statistic that measures how the returns of two risky assets move together is:A) variance. B) standard deviation. C)covariance. D) correlation.E) C and D.16、Rosenberg and Guy found that __________ helped to predict a firm's beta.A) the firm's financial characteristicsB) the firm's industry groupC) firm sizeD) both A and BE) A, B and C all helped to predict betas.17、If a firm's beta was calculated as 0.6 in a regression equation, Merrill Lynch would state the adjusted beta at a numberA) less than but greater than zero.B) between and .C) between and .D) greater than .E) zero or less.18、The beta of Exxon stock has been estimated as by Merrill Lynch using regression analysis on a sample of historical returns. The Merrill Lynch adjusted beta of Exxon stock would be ___________.A) B) 1.32 C) D) E) none of the above19、Consider the single-index model. The alpha of a stock is 0%. The return on the market index is 16%. The risk-free rate of return is 5%. The stock earns a return that exceeds the risk-free rate by 11% and there are no firm-specific events affecting the stock performance. The β of the stock is _______.A) B) 0.75 C) D) E)20、Suppose you forecast that the market index will earn a return of 15% in the coming year. Treasury bills are yielding 6%. The unadjusted β of Mobil stock is . A reasonable forecast of the return on Mobil stock for the coming year is _________ if you use Merrill Lynch adjusted betas.A) % B) % C) % D) % E) none of the above21、The unsystematic risk of a specific securityA) is likely to be higher in an increasing market.B) results from factors unique to the firm.C) depends on market volatility.D) cannot be diversified away.E) none of the above.22、Which statement about portfolio diversification is correctA) Proper diversification can reduce or eliminate systematic risk.B) The risk-reducing benefits of diversification do not occur meaningfully until at least 50-60 individual securities have been purchased.C) Because diversification reduces a portfolio's total risk, it necessarily reduces the portfolio's expected return.D) Typically, as more securities are added to a portfolio, total risk would be expected to decrease at a decreasing rate.E) None of the above statements is correct.23、Given an optimal risky portfolio with expected return of 12% and standard deviation of 23% and a risk free rate of 3%, what is the slope of the best feasible CALA) B) 0.39 C) D) E)24、Given an optimal risky portfolio with expected return of 13% and standard deviation of 26% and a risk free rate of 5%, what is the slope of the best feasible CALA) B) 0.14 C) D) E)25、The individual investor's optimal portfolio is designated by:A) The point of tangency with the indifference curve and the capital allocation line.B) The point of highest reward to variability ratio in the opportunity set.C) The point of tangency with the opportunity set and the capital allocation line.D) The point of the highest reward to variability ratio in the indifference curve.E) None of the above.26、The single-index modelA) greatly reduces the number of required calculations, relative to those required by the Markowitz model.B) enhances the understanding of systematic versus nonsystematic risk.C) greatly increases the number of required calculations,relative to those required by the Markowitz model.D) A and B. E) B and C.27、The Security Characteristic Line (SCL)A) plots the excess return on a security as a function of the excess return on the market.B) allows one to estimate the beta of the security.C) allows one to estimate the alpha of the security.D) all of the above. E) none of the above.28、The expected impact of unanticipated macroeconomic events ona security's return during the period isA) included in the security's expected return. B) zero.C) equal to the risk free rate. D) proportional to the firm's beta. E) infinite.29、Covariances between security returns tend to beA) positive because of SEC regulations.B) positive because of Exchange regulations.C) positive because of economic forces that affect many firms.D) negative because of SEC regulationsE) negative because of economic forces that affect many firms.30、One “cost” of the single-index model is that itA) is virtually impossible to apply.B) prohibits specialization of efforts within the security analysis industry.C) requires forecasts of the money supply.D) is legally prohibited by the SEC.E) allows for only two kinds of risk -- macro risk and micro risk.。