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    Stock return, variance and standard deviation

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    The last four years of returns for a stock are as follows:
    Year 1: -4.5%
    Year 2: +27.7%
    Year 3: +11.9%
    Year 4: +4.2%

    a. What is the average annual return?
    b. What is the variance of the stock's returns?
    c. What is the standard deviation of the stock's returns?

    NOTE: Notice that the average return and standard deviation must be entered in percentage format . The variance must be entered in decimal format

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    This solution provides calculations of stock average return, variance and standard deviation