| Value | Category | Cases | |
|---|---|---|---|
| 1 | difficult | 373 |
29.4%
|
| 2 | easy | 433 |
34.1%
|
| 3 | neutral | 243 |
19.1%
|
| 4 | verydifficult | 70 |
5.5%
|
| 5 | veryeasy | 86 |
6.8%
|
| Missing value | 64 |
5%
|