| Source of Variation | SS | df | MS | F | ES |
| Gender | 1.39 | 1 | 1.39 | 5.67* | 0.54 |
| Grade | 0.98 | 3 | 0.33 | 1.34 |
|
| Gender × Grade | 3.09 | 3 | 1.03 | 4.20** | 0.69 |
| Deviation | 52.70 | 215 | 0.25 |
|
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