Marquand diagram

A Marquand diagram is a chart that helps you to figure out a relationship between variables by looking at how they affect each other. Imagine a bunch of dots on a graph. All the dots could represent different things and the pattern they form tells you what their relationship is. For example, if one dot goes up and another dot goes down when the first one moves, that could represent how two things affect each other: when one goes up, the other goes down.