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  1. Prepare
  2. Tutorials
  3. 10 Days of Statistics
  4. Day 8: Pearson Correlation Coefficient II
  5. Discussions

Day 8: Pearson Correlation Coefficient II

  • razawy_h
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    I am confused how the pearson correlation can be calculated by finding the slope and the editorial did not make sense entirely to me. The formula for r: 

    r=∑((Xi−Xmean)*(Yi−Ymean)) / sqrt(∑((Xi−Xmean)^2) sqrt((Yi−Ymean) ^2)

    and the formula for calculatin a slope: b = ∑((xi−Xmean)(yi−Ymean))/ ∑(xi−Xmean) so how is it possible to calculate r without knowing all this?