Source | Coefficient estimate | Mean square | F-value | P value |
---|---|---|---|---|
Model | 84.92 | 86.66 | 7.49 | 0.0004 |
X1 | −1.84 | 81.28 | 7.03 | 0.0200 |
X2 | 0.32 | 0.80 | 0.069 | 0.7969 |
X3 | 0.044 | 0.047 | 0.004099 | 0.9499 |
X4 | −3.67 | 322.86 | 27.91 | 0.0001 |
X1 X2 | −1.33 | 28.28 | 2.45 | 0.1419 |
X1 X3 | 1.04 | 17.15 | 1.48 | 0.2449 |
X1 X4 | −0.43 | 2.95 | 0.26 | 0.6218 |
X2 X3 | 2.23 | 79.48 | 6.87 | 0.0211 |
X2 X4 | 1.87 | 55.73 | 4.82 | 0.0469 |
X3 X4 | 0.75 | 9.09 | 0.79 | 0.3914 |
X 21 | −0.98 | 26.28 | 2.27 | 0.1557 |
X 22 | 0.43 | 5.09 | 0.44 | 0.5186 |
X 23 | 0.75 | 15.36 | 1.33 | 0.2699 |
X 24 | 2.45 | 164.08 | 14.19 | 0.0024 |
X2 X3 X4 | −2.35 | 88.14 | 7.62 | 0.0162 |
X 21 X2 | −5.78 | 178.00 | 15.39 | 0.0017 |
Residual | 11.57 | – | – | |
Lack of fit | 14.79 | 2.31 | 0.1859 | |
Pure error | 6.41 | – | – | |
R 2 | 0.9022 | |||
Adjusted R 2 | 0.7818 | |||
Predicted R 2 | 0.1345 | |||
PRESS | 1330.20 | |||
Adequate precision | 11.708 | |||
Standard deviation | 3.40 |