| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 53 |
25.2%
|
| 2 | easy | 88 |
41.9%
|
| 3 | neutral | 39 |
18.6%
|
| 4 | verydifficult | 8 |
3.8%
|
| 5 | veryeasy | 22 |
10.5%
|
| Missing value | 26 |