Measures of Shape: Skewness and Kurtosis

This formula is adapted from page 85 of Cramer, Duncan, Basic Statistics for Social Research (Routledge, 1997). (Some authors suggest √(6/n), but for small samples that’s a poor approximation. And anyway, we’ve all got calculators, so you may as well do it right.) The critical value of Zg1 is approximately 2. (This is a two-tailed test of ................
................