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Pearson's correlation

  1. Feb 2, 2005 #1
    Now how exactly did Pearson derive his correlation coefficient?
  2. jcsd
  3. Feb 2, 2005 #2
    Is it simply a definition which reflects the linear relationship between two variables?
  4. Feb 2, 2005 #3
    That's what it's supposed to do; i'm just wondering how did Pearson derived or came up with the formula for it, which I have in the attached GIF image file, (correlation.gif)

    Where x=discrete independent variable, y=discrete dependent variable,
    and Sx=standard deviation of x-set, and Sy=standard deviation of y-set

    Attached Files:

    Last edited: Feb 2, 2005
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