| Subject | Control (M ± SD) | Experimental (M ± SD) | Adjusted Mean Difference | Cohen’s d | |---------|------------------|-----------------------|---------------------------|-----------| | Biologi | 62.3 ± 9.7 | 71.9 ± 8.4 | 8.4 (p < 0.001) | 0.68 | | Fisika | 58.7 ± 10.2 | 66.5 ± 9.1 | 7.2 (p = 0.002) | 0.61 | | Sejarah | 65.1 ± 8.5 | 72.4 ± 7.9 | 6.9 (p = 0.001) | 0.63 | | Geografi| 60.9 ± 9.0 | 68.2 ± 8.2 | 7.0 (p = 0.001) | 0.66 |
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