| Variable | df(v) (n − 1) | tcal | ttab | α (alpha) |
| DEE | 59 | 12.884 | 1.645 | 0.05 |
| HAA | 59 | 20.821 | 1.645 | 0.05 |
| EHA | 59 | 17.677 | 1.645 | 0.05 |
| RPA | 59 | 23.521 | 1.645 | 0.05 |
| EPA | 59 | 13.992 | 1.645 | 0.05 |
| EnTPA | 59 | 16.954 | 1.645 | 0.05 |
| CPA | 59 | 15.470 | 1.645 | 0.05 |
| GPA | 59 | 16.116 | 1.645 | 0.05 |