| Mixed-Level Designs |
Analyzing a Mixed-Level Design
To fit a model, click Fit in the main design window. ADX presents a window asking you to specify a response for which a model should be fit. Select SNRL(FORCE) and click Run.
Note that the only effects shown are the main effects of the control factors. You cannot select noise factors as significant. Because you are analyzing a signal-to-noise ratio, ADX collapses the design into the inner array.
None of the effects are automatically selected because the inner array design is saturated, and the only available automatic effect selection methods are ANOVA and stepwise regression.
Close the Effect Selection for SNRL(FORCE) window. After the changes are saved, a message dialog box appears asking whether to continue. Click Yes to return to the main design window.
Fit a model for MEAN(FORCE). There are no significant effects. Close the fit window and click OK. ADX will estimate the parameters of the master model, which includes just the main effects, and use this in optimization.
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