| T-Test | Independent Samples Test | ||||||||
|
| Test | N | Mean | Levene’s Test for Quality of Variances | T-test for Equality of Means | ||||
|
| f | Sig. | t | df | Sig. (2-tailed) | ||||
| confidence | Pre | 15 | 9.86 | EVA | 1.735 | 0.199 | 11.98 | 28 | 0.000 |
| Post | 15 | 71.40 | EVNA |
|
| 11.98 | 25.64 | 0.000 | |
| pronunciation | Pre | 15 | 8.20 | EVA | 0.098 | 0.757 | 19.22 | 28 | 0.000 |
| Post | 15 | 81.20 | EVNA |
|
| 19.22 | 27.28 | 0.000 | |
| grammar | Pre | 15 | 2.73 | EVA | 8.417 | 0.007 | 8.17 | 28 | 0.000 |
| Post | 15 | 41.39 | EVNA |
|
| 8.17 | 16.01 | 0.000 | |
| understanding | Pre | 15 | 7.73 | EVA | 1.718 | 0.201 | 10.67 | 28 | 0.000 |
| Post | 15 | 55.66 | EVNA |
|
| 10.67 | 21.68 | 0.000 | |