I group | J group | Difference between averages | Standard error | Meaningfulness level |
Diploma | Junier diploma | 2.23 | 0.62 | 0.001 |
Junior college | B. A and higher | 3.25 | 0.78 | 0.001 |
| B. A and higher | 1.01 | 0.67 | 0.13 |