Cramér's C

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In statistics, a measure of association between two categorical variables, applicable to a contingency table of any dimensions, based on the chi-square distribution. The value of C is calculated by taking the square root of χ2/N(k − 1), where N is the total number of scores and k is either the number of rows or the number of columns, whichever is smaller. Unlike the contingency coefficient, the value of C is relatively independent of the number of rows and columns. Also called Cramér's V. See also phi coefficient. [Named after the Swedish mathematician and statistician Harald Cramér (1893–1985) who introduced it]

Subjects: Psychology.

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