FAQ/cv102017-06-30 08:39:26PeterWatson92016-07-20 16:09:26PeterWatson82016-07-20 16:09:14PeterWatson72016-07-20 16:08:59PeterWatson62016-07-20 16:08:24PeterWatson52016-07-20 16:06:33PeterWatson42016-07-20 16:06:20PeterWatson32016-07-20 16:05:06PeterWatson22016-07-20 16:04:20PeterWatson12016-07-20 16:04:10PeterWatsonCramer's VCramer's V for a r x c table is defined as It converts a chisquare from a two-way frequency table with a set number of degrees of freedom into an effect size. Cohen (1988) gives rules of thumb for Cramer's V using chi-squares obtained from frequency tables having 1, 2 and 3 degrees of freedom (df) with a total sample of size N (see here which is taken from here). In the case of a 2x2 table Cramer's V is equivalent to the Phi statistic.