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4 June, 21:45

If the economy booms, Meyer&Co. stock will have a return of 20.4 percent. If the economy goes into a recession, the stock will have a loss of 12.7 percent. The probability of a boom is 67 percent while the probability of a recession is 33 percent. What is the standard deviation of the returns on the stock?

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  1. 5 June, 00:17
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    The standard deviation of the returns on the stock is 15.56% (Approx).

    Explanation:

    Expected Return=Respective return*Respective probability

    = (20.4*0.67) + (-12.7*0.33) = 9.477%

    probability Return probability * (Return-Expected Return) ^2

    0.67 20.4 0.67 * (20.4-9.477) ^2=79.93899243

    0.33 - 12.7 0.33 * (-12.7-9.477) ^2=162.3003786

    Total=242.239371%

    Standard deviation=[Total probability * (Return-Expected Return) ^2/Total probability]^ (1/2)

    =15.56% (Approx).
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