What is the approximate standard deviation of returns if over the past three years an investment returned 8.0 percent, -

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answerhappygod
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What is the approximate standard deviation of returns if over the past three years an investment returned 8.0 percent, -

Post by answerhappygod »

What is the approximate standard deviation of returns if over
the past three years an investment returned 8.0 percent, -12
percent, and 15.0 percent?
Please show work using formulas, No excel.
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