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Significant difference between the mean gain scores of students from the experimental and control groups
| Mean gain score | Mean difference | SD | Computed t | Population of the sample | Critical t (0.05 level of confidence) | |
|---|---|---|---|---|---|---|
| Control | 9.225 | 3.45 | 6.526 | 2.508 | 40 | 1.96 |
| Experimental | 12.675 | 5.752 | 40 |
