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Tukeys Honest Significant Difference (HSD) is a multiple comparison method based on the studentized range distribution.

16 votes
2 answers
119k views

How to obtain the results of a Tukey HSD post-hoc test in a table showing grouped pairs?

I would love to perform a TukeyHSD post-hoc test after my two-way Anova with R, obtaining a table containing the sorted pairs grouped by significant difference. (Sorry about the wording, I'm still new …
7 votes
1 answer
2k views

Is a post-hoc test supposed to be performed on transformed or original data?

This might be a silly question, but I could not find an equivalent one on CrossValidated. I was wondering: if I transform my data in order to meet the assumption of homoscedasticity before running a …