| Source | DF | Seq SS | Adj SS | Adj MS | F | P |
| Regression | 4 | 9129.83 | 9129.83 | 2282.46 | 15533.46 | 0.0001 |
| X1 | 1 | 7697.64 | 1770.77 | 1770.77 | 12051.3 | 0.0021 |
| X2 | 1 | 102.09 | 295.75 | 295.75 | 2012.8 | 0.0003 |
| X3 | 1 | 196.32 | 151.71 | 151.71 | 1032.5 | 0.0031 |
| X4 | 1 | 1133.78 | 1133.78 | 1133.78 | 7716.2 | 0.0011 |
| Error | 76 | 11.17 | 11.17 | 0.15 |
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| Total | 809141.00 | 9141.00 |
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