| Source of variation |
Sum of squares |
d.f. |
Mean square |
F-ratio |
F-tab |
| X1 |
0.21333333 |
1 |
0.2133333 |
22.15 |
F1,18=1.14 |
| X2 |
0.00240833 |
1 |
0.0024083 |
0.25 |
| X12 |
0.41423037 |
1 |
0.41423037 |
21.15 |
| X22 |
0.21781833 |
1 |
0.2178183 |
22.61 |
F3,18=3.16 |
| F15.3=8.70 |
| Model |
0.43356000 |
3 |
0.1445184 |
15.0029 |
| Error |
0.173390 |
18 |
0.00963278 |
|
|
| Lack of fit |
0.05539 |
15 |
0.00369 |
5.594 |
|
| Purely experimental uncertainty |
0.01800 |
3 |
0.00066 |
|
| Total (corr) |
0.59814 |
21 |
|
|
|
| R2 |
0.7143 |
|
