| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not easy | 12 |
9.4%
|
| 2 | fairly easy | 37 |
29.1%
|
| 3 | easy | 65 |
51.2%
|
| 4 | very easy | 13 |
10.2%
|
| Sysmiss | 464 |