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![A butterfly plot for comparing distributions](https://blogs.sas.com/content/iml/files/2018/05/butterflyplot2-640x336.png)
This article shows how to construct a butterfly plot in SAS. A butterfly plot (also called a butterfly chart) is a comparative bar chart or histogram that displays the distribution of a variable for two subpopulations. A butterfly plot for the cholesterol readings of 5,057 patients in a medical study