Open Access
Table 3
Analysis of variance for Ra.
| Source | SS | DF | MS | F-value | Prob. | Cont.% |
|---|---|---|---|---|---|---|
| (a) CC650 | ||||||
| Model | 0.3749750 | 6 | 0.06249583 | 41.3195592 | 0.1185 | |
| Vc | 0.0015125 | 1 | 0.0015125 | 1 | 0.5000 | 0.40 |
| f | 0.3081125 | 1 | 0.3081125 | 203.710744 | 0.0445 | 82.17 |
| t | 0.0091125 | 1 | 0.0091125 | 6.02479339 | 0.2463 | 2.43 |
| Vc × f | 0.0210125 | 1 | 0.0210125 | 13.892562 | 0.1669 | 5.60 |
| Vc × t | 0.0001125 | 1 | 0.0001125 | 0.07438017 | 0.8305 | 0.03 |
| f × t | 0.0351125 | 1 | 0.0351125 | 23.214876 | 0.1303 | 9.36 |
| Residual | 0.0015125 | 1 | 0.0015125 | |||
| Total | 0.3764875 | 7 | 100 | |||
| SD = 0.039 | R 2 = 0.9960 | |||||
| Mean = 0.38 | R 2 Adjusted = 0.9719 | |||||
| Coefficient of variation = 10.27 | R 2 Predicted = 0.7429 | |||||
| Predicted residual error of sum of squares (PRESS) = 0.097 | Adequate precision = 17.249 | |||||
| (b) CC670 | ||||||
| Model | 0.3525750 | 6 | 0.0587625 | 3.09072978 | 0.4099 | |
| Vc | 0.0055125 | 1 | 0.0055125 | 0.28994083 | 0.6855 | 1.56 |
| f | 0.1035125 | 1 | 0.1035125 | 5.44444444 | 0.2578 | 29.36 |
| t | 0.0010125 | 1 | 0.0010125 | 0.05325444 | 0.8556 | 0.29 |
| Vc × f | 0.0066125 | 1 | 0.0066125 | 0.3477975 | 0.6608 | 1.87 |
| Vc × t | 0.0406125 | 1 | 0.0406125 | 2.13609467 | 0.3820 | 11.52 |
| f × t | 0.1953125 | 1 | 0.1953125 | 10.2728468 | 0.1925 | 55.39 |
| Residual | 0.0190125 | 1 | 0.0190125 | |||
| Total | 0.3715875 | 7 | 100 | |||
| SD = 0.14 | R 2 = 0.9488 | |||||
| Mean = 054 | R 2 Adjusted = 0.6418 | |||||
| Coefficient of variation = 25.36 | R 2 Predicted = 2.2746 | |||||
| Predicted residual error of sum of squares (PRESS) = 1.22 | Adequate precision = 4.884 | |||||
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