![](https://blogs.sas.com/content/graphicallyspeaking/files/2016/05/Volcano_RR.png)
A Volcano Plot is a type of scatter-plot that is used to quickly identify changes in large data sets composed of replicate data. In the clinical domain, a Volcano Plot is used to view Risk difference (RD) of AE occurrence (%) between drug and control by preferred term. One example of