Open Access
Table 4
ANOVA and fit summary for the second-order models of MRR, EWR, and Ra.
| Source | DF | Adj. SS | Adj. MS | F-value | P-value | Remarks |
|---|---|---|---|---|---|---|
| For MRR | ||||||
| Model | 5 | 31.7197 | 6.3439 | 125.88 | 0.000 | More significant |
| Linear | 3 | 30.1440 | 10.0480 | 199.38 | 0.000 | |
| A | 1 | 16.2258 | 16.2258 | 321.97 | 0.000 | |
| B | 1 | 8.5629 | 8.5629 | 169.91 | 0.000 | |
| C | 1 | 5.3553 | 5.3553 | 106.27 | 0.000 | |
| Square | 0 | |||||
| 2-Way interaction | 2 | 1.5757 | 0.7879 | 15.63 | 0.000 | |
| A×B | 1 | 0.7759 | 0.7759 | 15.40 | 0.002 | Significant |
| A×C | 1 | 0.7998 | 0.7998 | 15.87 | 0.001 | |
| Error | 14 | 0.7055 | 0.0504 | |||
| Lack-of-fit | 9 | 0.6616 | 0.0735 | 8.37 | 0.015 | |
| Pure error | 5 | 0.0439 | 0.0088 | |||
| Total | 19 | 32.4252 | ||||
| R2 = 97.82% R2adj. = 97.05% R2pred. = 91.05% | ||||||
| For EWR | ||||||
| Model | 6 | 0.612492 | 0.102082 | 44.57 | 0.000 | More significant |
| Linear | 3 | 0.452410 | 0.150803 | 65.84 | 0.000 | |
| A | 1 | 0.311269 | 0.311269 | 135.89 | 0.000 | |
| B | 1 | 0.076708 | 0.076708 | 33.49 | 0.000 | |
| C | 1 | 0.064434 | 0.064434 | 28.13 | 0.000 | |
| Square | 1 | 0.011099 | 0.011099 | 4.85 | 0.046 | Significant |
| A2 | 1 | 0.011099 | 0.011099 | 4.85 | 0.046 | |
| 2-Way interaction | 2 | 0.148982 | 0.074491 | 32.52 | 0.000 | |
| A×B | 1 | 0.084445 | 0.084445 | 36.87 | 0.000 | |
| A×C | 1 | 0.064537 | 0.064537 | 28.18 | 0.000 | |
| Error | 13 | 0.029777 | 0.002291 | |||
| Lack-of-Fit | 8 | 0.029376 | 0.003672 | 45.83 | 0.000 | |
| Pure Error | 5 | 0.000401 | 0.000080 | |||
| Total | 19 | 0.642269 | ||||
| R2 = 95.36% R2adj. = 93.22 % R2pred. = 83.41% | ||||||
| For Ra | ||||||
| Model | 9 | 14.7535 | 1.63928 | 236.80 | 0.000 | More significant |
| Linear | 3 | 13.0011 | 4.33372 | 626.03 | 0.000 | |
| A | 1 | 9.3142 | 9.31418 | 1345.49 | 0.000 | |
| B | 1 | 3.3381 | 3.33815 | 482.21 | 0.000 | |
| C | 1 | 0.3488 | 0.34882 | 50.39 | 0.000 | |
| Square | 3 | 1.3953 | 0.46510 | 67.19 | 0.000 | |
| A2 | 1 | 0.3260 | 0.32600 | 47.09 | 0.000 | |
| B2 | 1 | 0.0381 | 0.03806 | 5.50 | 0.041 | Significant |
| C2 | 1 | 1.3297 | 1.32971 | 192.08 | 0.000 | |
| 2-Way interaction | 3 | 0.3571 | 0.11902 | 17.19 | 0.000 | |
| A×B | 1 | 0.0377 | 0.03768 | 5.44 | 0.042 | |
| A×C | 1 | 0.1523 | 0.15226 | 21.99 | 0.001 | |
| B×C | 1 | 0.1671 | 0.16714 | 24.14 | 0.001 | |
| Error | 10 | 0.0692 | 0.00692 | |||
| Lack-of-fit | 5 | 0.0370 | 0.00740 | 1.15 | 0.442* | Insignificant |
| Pure error | 5 | 0.0322 | 0.00644 | |||
| Total | 19 | 14.8227 | ||||
| R2 = 99.53% R2adj. = 99.11% R2pred. = 96.21% | ||||||
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