Table II.
Plackett–Burman Screening Design with Nine Variables Generated Using Stat-Ease Software
| Formula | X 1 | X 2 | X 3 | X 4 | X 5 | X 6 | X 7 | X 8 | X 9 | X 10 | X 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 × 106 | 100.00 | 1.00 | 0.00 | 9.91 | 100.00 | 20.00 | 5.00 | 5.00 | -1.00 | 5.00 |
| 2 | 7 × 106 | 300.00 | -1.00 | 50.00 | 9.91 | 100.00 | 0.00 | 5.00 | 5.00 | 1.00 | 0.00 |
| 3 | 6 × 105 | 300.00 | 1.00 | 0.00 | 136.0 | 100.00 | 0.00 | 0.00 | 5.00 | 1.00 | 5.00 |
| 4 | 7 × 106 | 100.00 | 1.00 | 50.00 | 9.91 | 200.00 | 0.00 | 0.00 | 0.00 | 1.00 | 5.00 |
| 5 | 7 × 106 | 300.00 | -1.00 | 50.00 | 136.00 | 100.00 | 20.00 | 0.00 | 0.00 | -1.00 | 5.00 |
| 6 | 7 × 106 | 300.00 | 1.00 | 0.00 | 136.00 | 200.00 | 0.000 | 5.00 | 0.00 | -1.00 | 0.00 |
| 7 | 6 × 105 | 300.00 | 1.00 | 50.00 | 9.91 | 200.00 | 20.00 | 0.00 | 5.00 | -1.00 | 0.00 |
| 8 | 6 × 105 | 100.00 | 1.00 | 50.00 | 136.00 | 100.00 | 20.00 | 5.00 | 0.00 | 1.00 | 0.00 |
| 9 | 6 × 105 | 100.00 | -1.00 | 50.00 | 136.00 | 200.00 | 0.00 | 5.00 | 5.00 | -1.00 | 5.00 |
| 10 | 7 × 106 | 100.00 | -1.00 | 0.00 | 136.00 | 200.00 | 20.00 | 0.00 | 5.00 | 1.00 | 0.00 |
| 11 | 6 × 105 | 300.00 | -1.00 | 0.00 | 9.91 | 200.00 | 20.00 | 5.00 | 0.00 | 1.00 | 5.00 |
| 12 | 6 × 105 | 100.00 | -1.00 | 0.00 | 9.91 | 100.00 | 0.00 | 5.00 | 0.00 | -1.00 | 0.00 |