| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not easy | 11 |
7%
|
| 2 | fairly easy | 40 |
25.5%
|
| 3 | easy | 90 |
57.3%
|
| 4 | very easy | 16 |
10.2%
|
| Sysmiss | 434 |