|
| Table 6. ANOVA for the second factorial design. |
|
Source of variation |
Sum of square |
Degrees of freedom |
Mean square |
F-ratio (model significance) |
|
Regression |
15.75 |
6 |
2.63 |
19.13a |
|
Residual |
1.37 |
10 |
0.14 |
|
|
Lack of fit |
1.56 |
8 |
0.19 |
|
|
Pure error |
0.19 |
2 |
0.09 |
|
|
Total |
17.12 |
16 |
|
|
Determination coefficient: R2 = 0.90; F0.80,6,10 = 4.37. |
|
|