A contour graph can be used when we have two predictors X & Y, which have an impact on the response variable Z. Contour charts are similar to the surface charts that can be seen from above (any height) and are 2-D charts most of the time. In this chart, lines are drawn for (x, y) coordinates where the response (z) values are occurring.
Contour Plots in Excel (Table of Contents)Ĭontour Plots are how you can represent the three-dimensional surface (having a length(X), Width(Y) and depth/volume(Z)) chart on a two-dimensional plane (i.e.
