| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not easy | 16 |
3.7%
|
| 2 | fairly easy | 75 |
17.2%
|
| 3 | easy | 263 |
60.2%
|
| 4 | very easy | 83 |
19%
|
| Sysmiss | 154 |