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 2.20.

Figure 2.20 Fit Model Window for Two-Factor Response Surface Model

Click Run.

Figure 2.21 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 2.21 Model Fit for a Degree-Two Polynomial in Two Variables