| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 19 |
25.3%
|
| 2 | easy | 22 |
29.3%
|
| 3 | neutral | 15 |
20%
|
| 4 | verydifficult | 8 |
10.7%
|
| 5 | veryeasy | 11 |
14.7%
|
| Missing value | 5 |