Table 5.
ANOVA for the quadratic polynomial mode.
| Source | Sum of square | df | Mean square | F-value | P-value Prob > F |
|---|---|---|---|---|---|
| Model | 2,249.11 | 14 | 160.65 | 292.84 | <0.00011 |
| X1 | 94.96 | 1 | 94.96 | 173.10 | <0.00011 |
| X2 | 564.93 | 1 | 564.93 | 1,029.76 | 0.00151 |
| X3 | 184.48 | 1 | 184.48 | 336.28 | <0.00011 |
| X4 | 14.79 | 1 | 14.79 | 26.96 | 0.00011 |
| X1X2 | 280.83 | 1 | 280.83 | 511.72 | <0.00011 |
| X1X3 | 12.53 | 1 | 12.53 | 22.84 | 0.00251 |
| X1X4 | 0.22 | 1 | 0.22 | 0.55 | 0.3211 |
| X2X3 | 23.57 | 1 | 23.57 | 42.97 | <0.00011 |
| X2X4 | 3.26 | 1 | 3.26 | 5.94 | 0.02772 |
| X3X4 | 10.89 | 1 | 10.89 | 19.85 | 0.01532 |
| X1X1 | 359.15 | 1 | 359.15 | 654.66 | <0.00011 |
| X2X2 | 758.46 | 1 | 758.46 | 1,382.54 | 0.00031 |
| X3X3 | 74.77 | 1 | 74.77 | 136.29 | <0.00011 |
| X4X4 | 189.69 | 1 | 189.69 | 345.77 | <0.00011 |
| Residual | 8.23 | 15 | 0.55 | ||
| Lack of fit | 6.14 | 10 | 0.51 | 0.83 | 0.6259 |
| Pure error | 3.09 | 5 | 0.62 | ||
| Cor total | 2,257.34 | 29 | |||
| R-Squared | 0.9964 | ||||
| Adj R-Squared | 0.9930 | ||||
| Pred R-Squared |
0.9849 | ||||
| Adeq Precision | 58.689 |
1
Significant within a 99.9% confidence interval.
2
Significant within a 95% confidence interval.