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Plots

Multiple Linear Regression Folio: Plots

The following plots may be available on the Analysis Plot tab of the multiple linear regression folio. Note that the contour plot and residual vs. factor plot are available only when there are at least two factors included in the analysis. For general information on working with plots, see Plots.

Effect plots allow you to visually evaluate the effects of factors and factorial interactions on the selected response.

Residuals are the differences between the observed response values and the response values predicted by the model at each combination of factor values. Residual plots help to determine the validity of the model for the currently selected response. When applicable, a residual plot allows the user to select the type of residual to be used:

The plots are described next.

* These plots are available only when there is error in the design, indicated by a positive value for sum of squares for Residual in the ANOVA table of the analysis results.

 

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