Post-hoc tests:
Post-hoc tests (or post-hoc comparison tests) are used at the second stage of the analysis of variance (ANOVA) or multiple analysis of variance (MANOVA) if the null hypothesis is rejected. The question of interest at this stage is which groups significantly differ from others in respect to the mean or, in case of MANOVA, in respect to centroid s.
The Bonferroni adjustment and the Dunn test are examples of post-hoc testing procedures.
See also multiple comparison .