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ANOVA of the results for tool life based on rake and primary clearance angles.
| Source | Sum of squares | Degree of freedom | Mean square | P |
|---|---|---|---|---|
| Rake angle | 28.72 | 2 | 14.36 | 0.0004 |
| Primary clearance angle | 11.60 | 1 | 11.60 | 0.0045 |
| Error | 14.26 | 14 | 1.02 | |
| Total | 54.58 | 17 |
