Power analysis
Post-hoc power analysis
- Post-hoc power analysis has been common in practice (for
“insignificant” findings)
- In post hoc power analysis, the observed samples (the effect size
and variance) are examined to “estimate” the “original power”.
- i.e., “How insufficient was the sample size.”
- There has been recent debate about usefulness
- Based on my readings in the math literature, this activity should be
discouraged as it doesn’t add value relative to \(p\)-value
- just be familiar with the concept
- For a journal article, if asked to do this, recruit me to help
rebutt