Post Hoc Tests

Post Hoc Tests

1. Post-Hoc Basics

   • Comparisons that are decided on after the data has been collected
   • Used to determine which groups differ significantly after ANOVA has identified a significant difference somewhere.

2. When to do a Post-Hoc

   • Were significant
   • If you have more than 2 levels of the factor
   • Best to use on a .001 sig as at 0.05 still 1 in 20 chance of error (type 1)

3. Reporting Post-hocs

   • e.g level a * level b was significant
   • Talk about the interactions and which ones were significant