Multiple Regression

czamiara

I see in Notebook 3 Multiple Regression how to graph two explanatory variables but is there a way to graph 3? I know how to do the regression on more than 2 but just didn't know if there was a way graph more than 2. I am guessing there is not as the graph would look way to busy/messy, but thought I would ask.

bkirk272

Through students' work with Notebook 3, they'll see that color can be a means of visually representing multiple variables within a single display. Naturally we cannot rely on position of dots to show more than two variables (not without a three-dimensional display, at least), so we need methods other that position in order to show more information. Color is one way to differentiate points, but so would be the size of dots or even the shape of dots (squares, stars, etc.). But as you suggest, going much beyond three variables creates quite a messy graph! I like to share this graph as an example of the upper limit on how much information/how many variables can be contained within a single graph.