statsmodels.stats.oneway.f2_to_wellek¶ statsmodels.stats.oneway.f2_to_wellek(f2, n_groups)[source]¶ Convert Cohen’s f-squared to Wellek’s effect size (sqrt) This computes the following effect size : eps = sqrt(n_groups * f2) Parameters: f2float or ndarrayEffect size Cohen’s f-squared n_groupsintNumber of groups in oneway comparison Returns: epsfloat or ndarrayWellek’s effect size used in anova equivalence test