Design Diagnostics

In the Compare Designs report, the Design Diagnostics section shows D-, G-, A, and I-efficiencies for the reference design relative to the comparison designs. It also shows the Additional Run Size. Given two designs, the one with the higher relative efficiency measure is better.

Efficiency

Relative efficiencies for each of D-, G-, A-, and I-efficiency are shown for each design. These are obtained by computing each design’s efficiency value and then taking the appropriate ratio. The descriptions of the relative efficiency measures are given in Relative Efficiency Measures.

Additional Run Size

The number of runs in the reference design minus the number of runs in the comparison design. If your reference design has more runs than your comparison design, then the Additional Run Size tells you how many additional runs you need to achieve the efficiency of the reference design.

Figure 17.20 Design Diagnostics for Three Designs 

The values in the Design Diagnostics table are colored according to a color gradient shown under the table. You can control the color legend using the options in the Design Diagnostics red triangle menu. See Color Legend.