Analyze Response Surface Design
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Stat > DOE > Response Surface > Analyze Response Surface Design

Fits response surface models generated with Create Response Surface Design or Define Custom Response Surface Design.

You can use a stepwise procedure to automatically fit the model. Choose to fit models with the following terms:

·    all linear terms

·    all linear terms and all squared terms

·    all linear terms and all two-way interactions

·    all linear terms, all squared terms, and all two-way interactions (the default)

·    a subset of linear terms, squared terms, and two-way interactions

The model you fit will determine the nature of the effect, linear or curvilinear, that you can detect.

To reduce the impact of non-orthogonal terms, Minitab fits the model in coded units.

Minitab stores the last model that you fit for each response variable. You can use the stored model to quickly generate predictions, factorial plots, contour plots, surface plots, overlaid contour plots, and optimized responses.

See Stored Model Overview for a discussion about how to use stored models.

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Responses: Select the continuous variable(s) that you want to explain or predict. The response is also called the Y variable. If there is more than one response variable, Minitab fits separate models for each response.

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