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Average returns, the variances and the standard deviations

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Calculating returns and Variability: Using the following returns, calculate the average returns, the variances and the standard deviations for X and Y.
Returns
Year X Y
1 16% 34%
2 18% -7%
3 -9% -12%
4 21% 41%
5 2% 10%

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Solution Summary

The expert calculates the average returns, the variances and the standard deviations.

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For X

X= X 2 =
16% 0.0256
18% 0.0324
-9% 0.0081
21% 0.0441
2% 0.0004
Total= 48% 0.1106
n=no of ...

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