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Spearman's Rank Correlation Coefficient

  1. Feb 14, 2005 #1
    This is the equation for the Rank Correlation Coefficient:
    1- \frac {6 \sum d^2} {n(n^2-1)}

    can anyone explain the 6?
    why a six? i don't see the link.
  2. jcsd
  3. Feb 14, 2005 #2


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