| Serial number of experiment | Experimental value | Coded value | E(%) | E(%) | ||||||
| X1 | X2 | X3 | X4 | X1 | X2 | X3 | X4 | Experimental value | Predictive value | |
| 1 | 11.0 | 100.0 | 1.5 | 6.0 | 1 | 0 | 1 | 0 | 51.13 | 47.54 |
| 2 | 7.0 | 150.0 | 1.0 | 3.0 | 0 | 1 | 0 | −1 | 30.12 | 30.23 |
| 3 | 7.0 | 100.0 | 0.5 | 3.0 | 0 | 0 | −1 | −1 | 32.98 | 30.66 |
| 4 | 7.0 | 100.0 | 1.0 | 6.0 | 0 | 0 | 0 | 0 | 54.57 | 55.53 |
| 5 | 7.0 | 100.0 | 1.0 | 6.0 | 0 | 0 | 0 | 0 | 56.31 | 55.53 |
| 6 | 11.0 | 100.0 | 1.0 | 9.0 | 1 | 0 | 0 | 1 | 49.81 | 50.28 |
| 7 | 7.0 | 100.0 | 1.0 | 6.0 | 0 | 0 | 0 | 0 | 52.81 | 55.53 |
| 8 | 7.0 | 50.0 | 1.0 | 9.0 | 0 | −1 | 0 | 1 | 77.91 | 77.06 |
| 9 | 7.0 | 100.0 | 1.0 | 6.0 | 0 | 0 | 0 | 0 | 60.88 | 55.53 |
| 10 | 7.0 | 150.0 | 1.5 | 6.0 | 0 | 1 | 1 | 0 | 53.48 | 39.71 |
| 11 | 7.0 | 100.0 | 1.5 | 9.0 | 0 | 0 | 1 | 1 | 74.79 | 75.99 |