| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not easy | 22 |
15.3%
|
| 2 | fairly easy | 38 |
26.4%
|
| 3 | easy | 72 |
50%
|
| 4 | very easy | 12 |
8.3%
|
| Sysmiss | 447 |