Tag Archives: Hypothesis testing

PMean: Calculating statistics that have limitations

Someone asked what you should do if you get a request to compute a p-value on a post hoc analysis. In general, any statistic computed on a post hoc analysis is likely to be biased, but a p-value is especially troublesome as it is much more prone to misuse or misinterpretation. Should you refuse to calculate this p-value? Here’s what I said. Continue reading