Two-Factor Response Surface Model

Effects to be entered: X&RS, Z&RS, X*X, X*Z, Z*Z

In the Select Columns list, select two continuous effects, X and Z.

Select Macros > Response Surface.

Example of Two-Factor Response Surface Model

Open the Odor Control Original.jmp sample data table. You want to fit a response surface to model the response, odor, as a function of temp and gl ratio. (Although you could include ht, as shown in the data table script Response Surface, for this illustration do not.)

Select Analyze > Fit Model.

In the Select Columns list, select odor and click Y.

In the Select Columns list, select temp and gl ratio.

Select Macros > Response Surface.

The Fit Model window appears as shown in Figure 1.20.

Figure 1.20 Fit Model Window for Two-Factor Response Surface Model

Click Run.

Figure 1.21 shows a Surface Profiler plot of the data and a quadratic response surface fit to the data for the Odor Control Original.jmp sample data table. To obtain this plot, from the report’s red triangle menu, select Factor Profiling > Surface Profiler. To show the points, click the disclosure icon to open the Appearance panel and click Actual. If you want to make the points appear larger, right click in the plot, select Settings and adjust the Marker Size.

Figure 1.21 Model Fit for a Degree-Two Polynomial in Two Variables