| Sum of squares | DF | Mean of squares | F | sig | Eta | Power of test |
Pretest | 18.36 | 1 | 18.36 | 25.03 | 0.0001 | 0.29 | 0.98 |
Group | 9.48 | 2 | 5.17 | 6.12 | 0.007 | 0.19 | 0.81 |
Error | 30.73 | 40 | 0.81 |
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