# Post Hoc Power : Tables and Commentary

@inproceedings{Lenth2007PostHP, title={Post Hoc Power : Tables and Commentary}, author={Russell V. Lenth}, year={2007} }

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…

## 26 Citations

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