Cramer's V

(NL: Cramer's V)

Cramér's V is a measure of association between two qualitative variables. It ranges from 0 to 1, where 0 means no association and 1 means perfect association. It is based on the chi-square statistic and is defined as

\[V = \sqrt{\frac{\chi^2}{n(k-1)}}\]

where \(\chi^2\) is the chi-squared statistic, \(n\) is the number of observations, and \(k\) is the number of categories in the contingency table.