Create a contour plot

You can create a contour plot that represents the relationship between three variables.

For example, this contour plot shows how reheat time (y) and temperature (x) affect the quality (contours) of a frozen entree.

To create a contour plot, you must use a worksheet that contains three or more columns of measurement data: one or more response variables (Z) and two predictor variables (X and Y).

Example worksheet

C1 C2 C3
Temp Time Quality
350 24 0.1
350 26 0.2
350 28 1.1
... ... ...
  1. Choose Graph > Contour Plot.
  2. Under Z variables, enter a response variable. In the example, Quality is the z variable.
  3. Under Y variable, enter the predictor variable to appear on the Y-axis. In the example, Temp is the Y variable.
  4. Under X variable, enter the predictor variable to appear on the X-axis. In the example, Time is the X variable.
  5. Click OK.
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