Question

In: Finance

Use the following information on states of the economy and stock returns to calculate the standard...

Use the following information on states of the economy and stock returns to calculate the standard deviation of returns. (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)

State of Economy Probability of
State of Economy
Security Return
if State Occurs
Recession .35 −10.00 %
Normal .50 7.00
Boom .15 17.00

Solutions

Expert Solution

Expected return=Respective return*Respective probability

=(0.35*-10)+(0.5*7)+(0.15*17)

=2.55%

probability Return probability*(Return-Expected Return)^2
0.35 -10 0.35*(-10-2.55)^2=55.125875
0.5 7 0.5*(7-2.55)^2=9.90125
0.15 17 0.15*(17-2.55)^2=31.320375
Total=96.3475%

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

=(96.3475)^(1/2)

=9.82%(Approx)


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