| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not easy | 19 |
9.4%
|
| 2 | fairly easy | 53 |
26.2%
|
| 3 | easy | 114 |
56.4%
|
| 4 | very easy | 16 |
7.9%
|
| Sysmiss | 389 |