| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 353 |
44.9%
|
| 2 | easy | 196 |
24.9%
|
| 3 | neutral | 81 |
10.3%
|
| 4 | verydifficult | 134 |
17%
|
| 5 | veryeasy | 22 |
2.8%
|
| Missing value | 1089 |