| Pre-test | Post-test | Gain |
N | 16 | 16 | - |
Mean | 8.19 | 13.81 | 5.62 |
Standard deviation | 2.562 | 3.124 | 0.562 |
Minimum | 6 | 6 | 0 |
Maximum | 15 | 18 | 9 |
Median | 7.5 | 14.5 | 6 |