If the economy booms, Meyer&Co. stock will have a return of 23.3 percent. If the economy goes into a recession, the stock will have a loss of 11.8 percent. The probability of a boom is 66 percent while the probability of a recession is 34 percent. What is the standard deviation of the returns on the stock?
Step-1:Calcualation of expected return | ||||||||||||
Probability of | Return | |||||||||||
State of Economy | State of Economy | |||||||||||
a | b | a*b | ||||||||||
Boom | 66% | 23.30% | 15.38% | |||||||||
Recession | 34% | -11.80% | -4.01% | |||||||||
Total | 11.37% | |||||||||||
Step-2:Calculation of Standard deviation | ||||||||||||
Standard Deviation | = | Varinace ^ (1/2) | ||||||||||
= | 2.7646% | ^ (1/2) | ||||||||||
= | 16.63% | |||||||||||
Working: | ||||||||||||
Calculation of Variance: | ||||||||||||
State of Economy | State of Economy | rate of Return | Expected rate of return | |||||||||
a | b | c | d=((b-c)^2)*a | |||||||||
Boom | 66% | 23.30% | 11.37% | 0.9400% | ||||||||
Recession | 34% | -11.80% | 11.37% | 1.8247% | ||||||||
Total | 22.73% | 2.7646% | ||||||||||
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