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

14 votes

ANOVA results do not match post-hoc Tukey test, how to proceed?

This is not an area where there is universal agreement. My view is that 1) the two tests answer different questions, so it's not surprising that they get different answers. 2) This discrepancy is mor …
Peter Flom's user avatar
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2 votes
Accepted

How can I get a significant overall ANOVA but no significant pairwise differences with Tukey...

Why should it not be possible? The overall test and the pairwise tests ask different questions, so they can get different answers. The overall ANOVA asks a question about the whole independent variabl …
Peter Flom's user avatar
  • 128k
3 votes

Should we conduct post-hoc tests when there is a significant interaction but no significant ...

I think your conclusion should be that there is a significant interaction but that this is not significant after accounting for multiple testing. But your emphasis should be on the size of the inter …
Peter Flom's user avatar
  • 128k
1 vote

Repeated measures ANOVA with significant interaction effect, but non-significant main effect

I am late to the party here, and there are already good answers. But I don't think the sentence: an individual has suggested you need all main effects to be significant prior to further investigation …
Peter Flom's user avatar
  • 128k