Table 3. Summary of regression analysis results for responses Y1 and Y2.
| Models | R2 | Adjusted R2 | Predicted R2 | Std. Dev | Press | Remarks |
|---|---|---|---|---|---|---|
| Response Y1 | ||||||
| Linear | 0.8235 | 0.8421 | 0.8014 | 4.35 | 29.20 | ....... |
| 2FI | 0.9956 | 0.9953 | 0.9789 | 2.47 | 49.00 | Suggested |
| Quadratic | 0.6987 | 0.83.45 | 0.7235 | 2.44 | 25.45 | |
| Cubic | 0.8976 | 0.8262 | 0.9284 | 3.67 | 40.52 | ....... |
| Response Y2 | ||||||
| Linear | 0.8888 | 0.8562 | 0.8590 | 3.87 | 10.00 | ....... |
| 2FI | 0.9730 | 0.9882 | 0.9834 | 1.77 | 20.84 | Suggested |
| Quadratic | 0.9120 | 0.8720 | 0.8250 | 3.67 | 10.00 | ....... |
| Cubic | 0.8925 | 0.8725 | 0.8290 | 4.50 | 14.40 | ....... |
| Regression equations of the fitted models | ||||||
| Y1= +49.50+17.37A+5.55B+8.48C | ||||||
| Y2= +78.12 + 4.11 A+4.14B+4.14C |