chi-square test

noun

, Statistics.

1. a test devised by Karl Pearson that uses the quantity chi-square for testing the mathematical fit of a frequency curve to an observed frequency distribution.

chi-square test

noun

1. statistics a test derived from the chi-square distribution to compare the goodness of fit of theoretical and observed frequency distributions or to compare nominal data derived from unmatched groups of subjects

Word History and Origins

Origin of chi-square test¹

First recorded in 1935–40