| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 1019 |
31.4%
|
| 2 | easy | 1164 |
35.9%
|
| 3 | neutral | 709 |
21.9%
|
| 4 | verydifficult | 204 |
6.3%
|
| 5 | veryeasy | 145 |
4.5%
|
| Missing value | 102 |