1.
Select DOE > Definitive Screening > Definitive Screening Design.
2.
Type 4 in the Add N Factors box and click Continuous.
3.
Type 2 in the Add N Factors box and click Categorical.
Figure 6.12 Definitive Screening Dialog with 4 Continuous and 2 Categorical Factors
4.
Click Continue.
5.
Next to Number of Extra Runs, select 0.
6.
Click Make Design.
7.
Open the Design Evaluation > Color Map On Correlations outline.
Figure 6.13 Color Map for Definitive Screening Design
1.
Select DOE > Classical > Screening Design.
2.
Type 4 in the Add N Factors box and click Continuous.
3.
Type 2 in the Add N Factors box and click Categorical > 2 Level.
4.
Click Continue.
5.
Select Choose from a list of fractional factorial designs and click Continue.
Figure 6.14 Plackett-Burman Design
7.
Click Continue.
8.
Open the Design Evaluation > Color Map On Correlations outline.
Figure 6.15 Plackett-Burman Correlations (left) and Definitive Screening Correlations (right)
Figure 6.15 shows both color maps, but shows only the portion of the Plackett-Burman color map that involves main effects and two-way interactions. (To construct the color map for the Plackett-Burman design without the three-way interactions, construct the design. Then obtain the color map using Evaluate Design.)

Help created on 10/11/2018