Scattergram is a noun that refers to a diagram used to compare two variables.

Coming from two common English words, scattergram is a synonym of a scatter diagram, that may be preferable because it rolls off the tongue faster and easier. Here’s an example of it in use:

I used a scattergram to compare the different factors that has caused our team to struggle. Showing a diagram of those factors line up against each other really does illustrate our truly awful our team is.