Question

6. Stocks A and B have the following probability distributions of expected future returns: Probability A...

6. Stocks A and B have the following probability distributions of expected future returns:

Probability A B
0.1 (8%) (24%)
0.2 5 0
0.3 13 23
0.3 24 30
0.1 30 44
  1. Calculate the expected rate of return, rB, for Stock B (rA = 14.30%.) Do not round intermediate calculations. Round your answer to two decimal places.
    %

  2. Calculate the standard deviation of expected returns, σA, for Stock A (σB = 18.96%.) Do not round intermediate calculations. Round your answer to two decimal places.
    %

  3. Now calculate the coefficient of variation for Stock B. Round your answer to two decimal places.

  4. Is it possible that most investors might regard Stock B as being less risky than Stock A?

    1. If Stock B is more highly correlated with the market than A, then it might have a higher beta than Stock A, and hence be less risky in a portfolio sense.
    2. If Stock B is more 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.
    3. If Stock B is more highly correlated with the market than A, then it might have the same beta as Stock A, and hence be just as risky in a portfolio sense.
    4. 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.
    5. If Stock B is less highly correlated with the market than A, then it might have a higher beta than Stock A, and hence be more risky in a portfolio sense.

Homework Answers

Answer #1

Answer a.

Stock B:

Expected Rate of Return = 0.10 * (-0.24) + 0.20 * 0.00 + 0.30 * 0.23 + 0.30 * 0.30 + 0.10 * 0.44
Expected Rate of Return = 0.1790 or 17.90%

Answer b.

Stock A:

Variance = 0.10 * (-0.08 - 0.1430)^2 + 0.20 * (0.05 - 0.1430)^2 + 0.30 * (0.13 - 0.1430)^2 + 0.30 * (0.24 - 0.1430)^2 + 0.10 * (0.30 - 0.1430)^2
Variance = 0.012041

Standard Deviation = (0.012041)^(1/2)
Standard Deviation = 0.1097 or 10.97%

Answer c.

Stock B:

Coefficient of Variation = Standard Deviation / Expected Return
Coefficient of Variation = 0.1896 / 0.1790
Coefficient of Variation = 1.06

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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