Table 5.
Variance analysis of crankshaft straightness.
| Source | Sum of Squares | df | Mean Square | F | p |
|---|---|---|---|---|---|
| Model | 68.59 | 9 | 7.62 | 64.36 | <0.0001 |
| A | 52.58 | 1 | 52.58 | 444.07 | <0.0001 |
| B | 0.5618 | 1 | 0.5618 | 4.74 | 0.0658 |
| C | 9.83 | 1 | 9.83 | 83.06 | <0.0001 |
| AB | 0.0090 | 1 | 0.0090 | 0.0762 | 0.7905 |
| AC | 0.0900 | 1 | 0.0900 | 0.7601 | 0.4122 |
| BC | 0.0132 | 1 | 0.0132 | 0.1117 | 0.7480 |
| A2 | 5.26 | 1 | 5.26 | 44.41 | 0.0003 |
| B2 | 0.0052 | 1 | 0.0052 | 0.0436 | 0.8406 |
| C2 | 0.1327 | 1 | 0.1327 | 1.12 | 0.3250 |
| Residual | 0.8289 | 7 | 0.1184 | ||
| Lack of Fit | 0.8289 | 3 | 0.2763 | ||
| Pure Error | 0.0000 | 4 | 0.000 | ||
| Cor Total | 69.42 | 16 |