| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 11 |
13.4%
|
| 2 | easy | 32 |
39%
|
| 3 | neutral | 5 |
6.1%
|
| 4 | verydifficult | 7 |
8.5%
|
| 5 | veryeasy | 27 |
32.9%
|
| Missing value | 3 |