Pearson's r

This section introduces Pearson's correlation and explains what the typical values represent. It then elaborates on the properties of r, particularly that it is invariant under linear transformation. Finally, it introduces several formulas we can use to compute Pearson's correlation.

Values of the Pearson Correlation

Answers


  1. As \mathrm{X} increases, \mathrm{Y} tends to increase, so it is a positive association.

  2. As \mathrm{X} increases,  \mathrm{Y} tends to decrease, so it is a negative association.