a. | Stock A expected return | 10.55% | |||||||||
Stock B expected return | 15.35% | ||||||||||
Working: | |||||||||||
Stock A: | Stock B: | ||||||||||
State of economy | Probability | Rate of return | State of economy | Probability | Rate of return | ||||||
a | b | c=a*b | a | b | c=a*b | ||||||
Recession | 0.15 | 0.02 | 0.30% | Recession | 0.15 | -0.30 | -4.50% | ||||
Normal | 0.50 | 0.10 | 5.00% | Normal | 0.50 | 0.18 | 9.00% | ||||
Boom | 0.35 | 0.15 | 5.25% | Boom | 0.35 | 0.31 | 10.85% | ||||
Total | 10.55% | Total | 15.35% | ||||||||
b. | Stock A standard deviation | 4.25% | |||||||||
Stock B standard deviation | 19.94% | ||||||||||
Working: | |||||||||||
Calculation of Variance: | |||||||||||
Stock A: | Stock B: | ||||||||||
State of economy | Probability | Rate of return | Expected return | State of economy | Probability | Rate of return | Expected return | ||||
a | b | c | d=((b-c)^2)*a | a | b | c | d=((b-c)^2)*a | ||||
Recession | 0.15 | 0.02 | 10.55% | 0.001097 | Recession | 0.15 | -0.30 | 15.35% | 0.030849 | ||
Normal | 0.50 | 0.10 | 10.55% | 0.000015 | Normal | 0.50 | 0.18 | 15.35% | 0.000351 | ||
Boom | 0.35 | 0.15 | 10.55% | 0.000693 | Boom | 0.35 | 0.31 | 15.35% | 0.008572 | ||
Variance | 0.001805 | Variance | 0.039773 | ||||||||
Calculation of standard deviation: | |||||||||||
Stock A: | Stock B: | ||||||||||
Standard deviation | = | Variance ^ (1/2) | Standard deviation | = | Variance ^ (1/2) | ||||||
= | 0.001805 | ^(1/2) | = | 0.039773 | ^ (1/2) | ||||||
= | 4.25% | = | 19.94% | ||||||||
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