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Math Help - Least Squares Fitting

  1. #1
    Junior Member
    Joined
    Nov 2007
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    Least Squares Fitting

    Hello,

    It is often said that the square of the correlation coefficient, r^2, is the fraction of the variation in y that is explained by its relationship with x. I seek assistance with determining how this translates to the following:

    1- r^2 = (deviations from trendline)/(standard deviation of y data)

    i.e. standard deviation of the data's deviation from the trendline divided by the the standard deviation of the y data is 1- r^2.

    Look forward to your advise.

    Best regards,
    wirefree
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  2. #2
    Junior Member
    Joined
    Nov 2007
    Posts
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    Keenly look forward to a response to my query above.

    Best regards,
    wirefree
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