| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult. | 540 |
40.8%
|
| 2 | Fairly difficult. | 343 |
25.9%
|
| 3 | Fairly easy. | 185 |
14%
|
| 4 | Very easy. | 256 |
19.3%
|
| Sysmiss | 24 |