![A zipper plot for visualizing coverage probability in simulation studies](https://blogs.sas.com/content/iml/files/2018/03/zipper3-400x336.png)
Simulation studies are used for many purposes, one of which is to examine how distributional assumptions affect the coverage probability of a confidence interval. This article describes the "zipper plot," which enables you to compare the coverage probability of a confidence interval when the data do or do not follow