The returns on a portfolio over the last five years were −5.2 percent,21.6 percent,4.5 percent,11.7 percent,and 5.9 percent.What is the standard deviation of these returns?
A)8.82 percent
B)9.21 percent
C)9.86 percent
D)9.08 percent
E)9.73 percent

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The Answer of The returns on a portfolio over the last five years were −5.2 percent,21.6 percent,4.5 percent,11.7 percent,and 5.9 percent.What is the standard deviation of these returns?
A)8.82 percent
B)9.21 percent
C)9.86 percent
D)9.08 percent
E)9.73 percent

The Returns on a Portfolio Over the Last Five Years