Consider the following information: |
Rate of Return If State Occurs | |||||||||
State of | Probability of | ||||||||
Economy | State of Economy | Stock A | Stock B | ||||||
Recession | .17 | .05 | − | .21 | |||||
Normal | .62 | .09 | .08 | ||||||
Boom | .21 | .16 | .25 | ||||||
Calculate the expected return for each stock. (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) |
Expected return | |
Stock A | % |
Stock B | % |
Calculate the standard deviation for each stock. (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) |
Standard deviation | |
Stock A | % |
Stock B | % |
Expected Return = (Prob(R) * Return in R) + (Prob(N) * Return in N) + (Prob(B) * Return in B)
Where prob = probability
R = Recession
N = Normal
B = Boom
Now, Return of A = (0.17 * .05) + (.62 * 0.09) + (0.21 * 0.16)
= 0.0979 OR 9.79%
Now, Return of B = (0.17 * .21) + (.62 * 0.08) + (0.21 * 0.25)
= 0.1378 OR 13.78%
Answer Part B
Standard Deviation of A
State of Economy | Given Return (X) | Expected Return (X1) | (X-X1)2 | Probability | (X-X1)*Probability |
Recession | 5% | 9.79% | 22.94 | .17 | 3.90 |
Normal | 9% | 9.79% | 0.6241 | .62 | 0.39 |
Boom | 16% | 9.79% | 38.56 | .21 | 8.10 |
TOTAL | 12.39 |
Standard Deviation = { ∑((X-X1)*Probability)1/2 }
= (12.39)1/2
= 3.52
Standard Deviation of B
State of Economy | Given Return (X) | Expected Return (X1) | (X-X1)2 | Probability | (X-X1)*Probability |
Recession | 21% | 13.78% | 52.13 | .17 | 8.86 |
Normal | 8% | 13.78% | 33.41 | .62 | 20.71 |
Boom | 25% | 13.78% | 125.89 | .21 | 26.44 |
TOTAL | 56.01 |
Standard Deviation ={ ∑((X-X1)*Probability)1/2 }
= (56.01)1/2
= 7.48
Standard Deviation of A = 3.52
Standard Deviation of B = 7.48
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