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Thread: Standard Deviation

  1. #1
    Junior Member
    Feb 2008

    Standard Deviation

    Hi, I am having trouble determining how Standard Deviation was calculated in a covariance problem between stocks and bonds. The standard deviation of the stock is supposed to be 14.92 and the standard deviation of the bond is supposed to be 7.75 and I just don't understand how these numbers were arrived at. I have the following data, I also have it in Excel if you would like.

    Probability: Stock Fund Bond Fund Product of deviation
    0.3 -21 10 -210
    0.4 3 0 0
    0.3 17 -10 -170

    Please help, thanks
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