• Corpus ID: 11770037

Post Hoc Power : Tables and Commentary

  title={Post Hoc Power : Tables and Commentary},
  author={Russell V. Lenth},
Post hoc power is the retrospective power of an observed effect based on the sample size and parameter estimates derived from a given data set. Many scientists recommend using post hoc power as a follow-up analysis, especially if a finding is nonsignificant. This article presents tables of post hoc power for common t and F tests. These tables make it explicitly clear that for a given significance level, post hoc power depends only on the P value and the degrees of freedom. It is hoped that this… 
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