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Comparison of two variables using standard deviation:
You have estimated the following probability distributions of expected returns for Stocks X & Y:
Stock X
Stock Y
Probability Return
0.1 -10%
0.2 2%
0.2 10
0.2 7
0.4 15
0.3 12
0.2 20
0.2 15
0.1 40
0.1 16
A. What is the standard deviation of expected returns for Stock X? For Stock Y?
Standard Deviation of X =
Standard Deviation of Y =
B. Which stock would you consider to be riskier? Why?
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