statsmodels.stats.multicomp.pairwise_tukeyhsd¶

statsmodels.stats.multicomp.pairwise_tukeyhsd(endog, groups, alpha=0.05, use_var='equal')[source]¶

Calculate all pairwise comparisons with TukeyHSD or Games-Howell.

Parameters:¶

endogndarray, float, 1d: response variable
groupsndarray, 1d: array with groups, can be string or integers
alphafloat: significance level for the test
use_var{“unequal”, “equal”}: If use_var is “equal”, then the Tukey-hsd pvalues are returned. Tukey-hsd assumes that (within) variances are the same across groups. If use_var is “unequal”, then the Games-Howell pvalues are returned. This uses Welch’s t-test for unequal variances with Satterthwaite’s corrected degrees of freedom for each pairwise comparison.

Returns:¶

resultsTukeyHSDResults instance: A results class containing relevant data and some post-hoc calculations, including adjusted p-value