17) A linear regression to estimate the relation between General Motors’ stock returns and
the market’s return gives the best itting line that represents the relation between the
stock and the market. The slope of this line is our estimate of ________.
A) alpha
B) beta
C) risk-free rate
D) volatility
AACSB Objective: Analytic Skills
Author: KB
Question Status: Previous Edition
18) A linear regression was done to estimate the relation between Sprint’s stock returns
and the market’s return. The intercept of the line was found to be 0.23 and the slope was
1.47. Which of the following statements is true regarding Sprint’s stock?
A) Sprint’s beta is 0.23.
B) Sprint’s beta is 1.47.
C) The risk-free rate is 1.47%.
D) The standard deviation of Sprint’s excess returns is 23%.
AACSB Objective: Analytic Skills
Author: JP
Question Status: Previous Edition
19) You observe that AT&T stock and the S&P 500 have the following weekly returns:
Week AT&T return S&P 500 return
1 0.005 0.001
2 0.010 0.005
3 -0.003 -0.005
4 -0.005 -0.001
If this pattern of stock returns is typical of AT&T stock, and you calculated a beta against
the S&P 500, which of the following is true?
A) AT&T’s beta is negative.
B) AT&T’s beta is zero.
C) AT&T’s beta is positive.
D) Cannot be determined from information given.
AACSB Objective: Analytic Skills
Author: JP
Question Status: Previous Edition
20) Which of the following statements is FALSE?
A) We say a portfolio is an eicient portfolio whenever it is possible to ind another portfolio
that is better in terms of both expected return and volatility.
B) We can rule out ineicient portfolios because they represent inferior investment choices.
C) The volatility of the portfolio will difer, depending on the correlation between the
securities in the portfolio.
D) Correlation has no efect on the expected return on a portfolio.