| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not easy | 17 |
11.2%
|
| 2 | fairly easy | 44 |
28.9%
|
| 3 | easy | 80 |
52.6%
|
| 4 | very easy | 11 |
7.2%
|
| Sysmiss | 439 |