Question

Calculate Karl Pearson’s coefficient of correlation from the following data taking deviations from Arithmetic mean and interpret the result.

Answer 1

Karl Pearson's correlation coefficient (r) formula is given by -

$r = \frac{\sum(X-\bar{X})(Y-\bar{Y})}{\sqrt{(\sum(X-\bar{X})^2)\ *\ ({\sum(Y-\bar{Y})^2)}}}$