Table 2.
The composition and observed responses of the 23 factorial design with trials listed in the standard order of this design.
| Trial | Factors |
Responses |
|||||
|---|---|---|---|---|---|---|---|
| X1 | X2 | X3 | Y1 (Q%2h) | Y2 (Q%6h) | Y3 (Q%12h) | Y4 (RSQzero) | |
| D1 | 10 | 10 | 0 | 0.5 | 1.6 | 2.8 | 0.975 |
| D2 | 25 | 10 | 0 | 0.5 | 68.5 | 100.0 | 0.864 |
| D3 | 10 | 20 | 0 | 0.6 | 1.8 | 54.6 | 0.560 |
| D4 | 25 | 20 | 0 | 0.8 | 70.7 | 100.0 | 0.880 |
| D5 | 10 | 10 | 1 | 1.4 | 4.9 | 18.6 | 0.857 |
| D6 | 25 | 10 | 1 | 31.4 | 87.9 | 100.0 | 0.761 |
| D7 | 10 | 20 | 1 | 0.5 | 77.0 | 100.0 | 0.904 |
| D8 | 25 | 20 | 1 | 26.5 | 82.7 | 99.5 | 0.831 |
where X1: PEG400 (%), X2: Coating level (%), and X3: Hole diameter (mm).