| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not easy | 11 |
9.3%
|
| 2 | fairly easy | 35 |
29.7%
|
| 3 | easy | 58 |
49.2%
|
| 4 | very easy | 14 |
11.9%
|
| Sysmiss | 473 |