Table 2.
Analysis of variance (ANOVA) for the quadratic uniform design model
| Factor | Coefficients | Sum of squares | Standard error | Degree of freedom | T a | P b |
|---|---|---|---|---|---|---|
| Constant |
−4864 |
|
1002 |
|
−4.86 |
0.040* |
|
X
1
|
59.97 |
642299 |
4.91 |
1 |
12.21 |
0.007* |
|
X
2
|
87.57 |
6239 |
8.63 |
1 |
10.15 |
0.010* |
|
X
3
|
21.81 |
298991 |
5.45 |
1 |
4.00 |
0.057 |
|
X
1
2 |
−0.23 |
656908 |
0.014 |
1 |
−15.97 |
0.004* |
|
X
2
2 |
−0.15 |
1445754 |
0.015 |
1 |
−10.10 |
0.010* |
|
X
3
2 |
−0.075 |
111229 |
0.015 |
1 |
−4.95 |
0.039* |
|
X
1
X
3
|
0.0011 |
7 |
0.028 |
1 |
0.04 |
0.972 |
| Model | F = 105.55 P = 0.009* |
|||||
| R2 = 99.7 % S = 65.4117 | ||||||
aT denotes t-value.
bP denotes P-value.
*denotes significant.