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Determining mean and Standard Deviation of Returns

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What is the approximate standard deviation of returns if over the past four years an investment returned 8.0%, -12.0%, -12% and 15.0%?

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Solution Summary

This solution takes you step by step through computing the mean and standard deviation of a set of investment returns.

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Because you did not specify, I assume that this is the entire population of returns. If it is, see parts A, B. C. If it is only a sample, see parts A, D, and E.

The standard deviation is computed by taking the square root after dividing the total of the ...

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