Pearson's correlation coefficient

noun

1. a statistic measuring the linear relationship between two variables in a sample and used as an estimate of the correlation in the whole population, given by r = Cov ( X, Y ) /√ [( Var ( X ) .Var ( Y )] In fullPearson's product moment correlation coefficient

Word History and Origins

Origin of Pearson's correlation coefficient¹

named after Karl Pearson (1857–1936), British mathematician