| Source of variation | Quadratic sum | DOF | Mean square | f | p |
| Interblock | 3053.450 | 3 | 1017.817 | 21.843*** | 0.000 |
| Intra-class | 28,563.629 | 613 | 46.596 |
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| Totality | 31,617.079 | 616 |
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