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Results of the ANOVA for the regression model of average roughness Ra.
| Source | Sum of Squares | Degree of Freedom | Mean Square | F Value | P Value | Meaning |
|---|---|---|---|---|---|---|
| Model | 13.33 | 2 | 6.67 | 322.84 | <0.0001 | significant |
| A–step size | 12.08 | 1 | 12.08 | 585.23 | <0.0001 | |
| A2 | 1.25 | 1 | 1.25 | 60.46 | <0.0001 | |
| Residual | 0.2684 | 13 | 0.0206 | |||
| Correlation Total | 13.6 | 15 |
