Research Article
Estimation of Optimum Dilution in the GMAW Process Using Integrated ANN-GA
Table 5
Analysis of variance for testing adequacy of the model.
| | Parameter | 1st-order terms | 2nd-order terms | Lack of fit | Error terms | -ratio | -ratio | Whether model is adequate | | SS | DF | SS | DF | SS | DF | SS | DF |
| | 36.889 | 20 | 6.233 | 11 | 3.513 | 6 | 2.721 | 5 | 1.076 | 3.390 | Adequate | | 7.810 | 20 | 0.404 | 11 | 0.142 | 6 | 0.261 | 5 | 0.454 | 7.472 | Adequate | | 1.921 | 20 | 0.572 | 11 | 0.444 | 6 | 0.128 | 5 | 2.885 | 3.747 | Adequate | | 506.074 | 20 | 21.739 | 11 | 6.289 | 6 | 15.45 | 5 | 0.339 | 8.189 | Adequate |
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SS: sum of squares; DF: degree of freedom; -ratio (6, 5, 0.5) = 3.40451; -ratio (20, 5, 0.05) = 3.20665.
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