Table 5. Analysis of variance for the experimental results of the central composite design (CCD). |
Source |
DF |
Sum of Squares |
Mean Square |
F Value |
Prob > F |
X2 a |
1 |
4565.25 |
4565.25 |
15.58 |
0.0056** |
X4 |
1 |
33.00 |
33.00 |
0.11 |
0.7470 |
X22 |
1 |
15629.14 |
15629.14 |
53.34 |
0.0002** |
X42 |
1 |
36511.52 |
36511.52 |
124.61 |
< 0.0001** |
X2X4 |
1 |
1148.87 |
1148.87 |
3.92 |
0.0882* |
Model |
5 |
52450.67 |
10490.13 |
35.80 |
< 0.0001** |
Error |
4 |
492.84 |
123.21 |
||
Total |
12 |
54501.64 |
|||
R2 = 0.9624 |
Adj-R2 = 0.9355 |
R = 0.9810 |
a The symbols were the same those in Table 1. |
|