Optimal Split Plot Design - Model Tab

Select the Model tab of the Optimal split plot design dialog box to access the options described here. The model specified here will be optimized by the D-Optimal split plot design algorithm.

Qualitative factors

Use the options in the Qualitative factors group box to specify the qualitative effects to be included in the model.

Main Effects

When the Main Effects option button is selected, the model will only contain main effects.

2-way interactions

When the 2-way interactions option button is selected, the model will include main effects and two-way interaction effects.

3-way interactions

When the 3-way interactions option button is selected, the model will include main effects, two-way interaction effects, and three-way interaction effects.

Quantitative factors

Use the options in the Quantitative factors group box to specify the quantitative effects to be included in the model.

Linear main effects only

When the Linear main effects only option button is selected, the model will only contain linear main effects.

Lin./quad. main effects.

main effects. When the Lin./quad. main effects option button is selected, the model will only contain linear and quadratic main effects.

Linear main eff. + 2-ways.

When the Linear main eff. + 2-ways option button is selected, the model will include linear main effects and two-way interaction effects.

Lin./quad. main eff. + 2-ways.

main eff. + 2-ways. When the Lin./quad. main eff. + 2-ways option button is selected, then the model will include linear and quadratic main effects and two-way interaction effects.

Ignore some effects

Click the Effects to ignore button to produce a general user entry spreadsheet, which contains a list of all factor effects and interactions in the current model. Highlight the factors or interactions that you want to ignore.