Effect Size While the exact measure of effect size is not provided in the table, generally, for a 2x2 table, Cramer's V can be used: V = 2 n ( k 1 ) V= n(k1) 2 Given: 2 = 7.820 2 =7.820 n = 320 n=320 (total) k = min ( number of rows, number of columns ) = 2 k=min(number of rows, number of columns)=2 V = 7.820 320 1 = 7.820 320 0.156 V= 3201 7.820 = 320 7.820 0.156 Interpretation: A Cramer's V of 0.156 indicates a small to moderate association