EXPECTED RETURNS
Stocks A and B have the following probability distributions of expected future returns:
Probability | A | B |
0.1 | (13%) | (35%) |
0.2 | 5 | 0 |
0.3 | 12 | 20 |
0.3 | 18 | 29 |
0.1 | 38 | 38 |
Calculate the expected rate of return, rB, for Stock
B (rA = 12.50%.) Do not round intermediate calculations.
Round your answer to two decimal places.
%
Calculate the standard deviation of expected returns,
σA, for Stock A (σB = 20.35%.) Do not round
intermediate calculations. Round your answer to two decimal
places.
%
Now calculate the coefficient of variation for Stock B. Round your answer to two decimal places.
Is it possible that most investors might regard Stock B as being less risky than Stock A?
Answer a.
Stock B:
Expected Return = 0.10 * (-0.35) + 0.20 * 0.00 + 0.30 * 0.20 +
0.30 * 0.29 + 0.10 * 0.38
Expected Return = 0.15 or 15.00%
Answer b.
Stock A:
Variance = 0.10 * (-0.13 - 0.1250)^2 + 0.20 * (0.05 - 0.1250)^2
+ 0.30 * (0.12 - 0.1250)^2 + 0.30 * (0.18 - 0.1250)^2 + 0.10 *
(0.38 - 0.1250)^2
Variance = 0.015045
Standard Deviation = (0.015045)^(1/2)
Standard Deviation = 0.1227 or 12.27%
Answer c.
Stock B:
Coefficient of Variance = Standard Deviation / Expected
Return
Coefficient of Variance = 0.2035 / 0.1500
Coefficient of Variance = 1.36
Answer d.
If Stock B is less highly correlated with the market than A, then it might have a lower beta than Stock A, and hence be less risky in a portfolio sense
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