Correlation Song

  1. The letter used to denote the sample (Pearson) correlation coefficient is: .
  2. Correlation describes the degree of clustering around .

  3. For a given scatterplot the correlation coefficient and the slope of the regression line would share the same sign.

    Try playing with the applet at with the “show line of best fit” box checked and watch how r and the slope behave (the slope is the number that x is multiplied by).