Parameter | Process Parameter | Degree of Freedom | Sum of Squares | Variance | F-ratio | Contribution (%) |
A | Voltage, V | 2 | 0.1332 | 0.0666 | 0.00096 | 0.09 |
B | Current, A | 2 | 3.6973 | 1.8487 | 0.0268 | 2.53 |
C | Welding Speed, mm/s | 2 | 4.7457 | 2.3729 | 0.0344 | 3.24 |
Error |
| 2 | 137.8180 | 68.9090 | - | 94.14 |
Total |
| 8 | 146.3942 | - | - | 100 |