Post Hoc Comparisons

This lesson is called Post Hoc Comparisons, part of the Inferential Statistics with R course. This lesson is called Post Hoc Comparisons, part of the Inferential Statistics with R course.

Transcript

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Your Turn

Perform one-way ANOVA to test whether there is a difference in hs_gpa by grade_class. Is there a difference? If so, perform a Tukey’s HSD to test where the differences are. Describe the differences.
Perform one-way ANOVA to test whether there is a difference in weight_2 by gender. Is there a difference? If so, perform a Tukey’s HSD to test where the differences are. Describe the differences.

Learn More

Read more about the tukey_hsd() function in the rstatix package. The rstatix package also has functions for Dunn's test of multiple comparisons using dunn_test(), Games Howell post-hoc tests using games_howell_test(), and pairwise comparisons of estimated marginal means using emmeans_test().