| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 54 |
20.5%
|
| 2 | easy | 90 |
34.2%
|
| 3 | neutral | 37 |
14.1%
|
| 4 | verydifficult | 14 |
5.3%
|
| 5 | veryeasy | 68 |
25.9%
|
| Missing value | 3 |