Question

Expected Return, Variance, Std. Deviation and Cofficient of Variation: Magee Inc.'s manager believes that economic conditions...

Expected Return, Variance, Std. Deviation and Cofficient of Variation:
Magee Inc.'s manager believes that economic conditions during the next year will be strong, normal, or weak, and she thinks that the firm's returns will have the probability distribution shown below. What's the standard deviation of the estimated returns?

Round your answer to two decimal places. For example, if your answer is $345.6671 round as 345.67 and if your answer is .05718 or 5.7182% round as 5.72.

State of the Economy

Probability of State Occurring

Stock's Expected Return

Boom

30%

25.35%

Normal

45%

14.85%

Recession

25%

–11.70%

A. 18.25%

B. 14.04%

C. 10.53%

D. 15.44%

E. 12.64%

Homework Answers

Answer #1

Expected Return=Respective Return*Respective probability

=(0.3*25.35)+(0.45*14.85)+(0.25*-11.7)

=11.3625%

probability Return probability*(Return-Expected Return)^2
0.3 25.35 0.3*(25.35-11.3625)^2=58.69504688
0.45 14.85 0.45*(14.85-11.3625)^2=5.473195313
0.25 -11.7 0.25*(-11.7-11.3625)^2=132.9697266
Total=197.1379688%

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

=(197.1379688)^(1/2)

=14.04%(Approx).

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