| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult. | 795 |
21.7%
|
| 2 | Fairly difficult. | 340 |
9.3%
|
| 3 | Fairly easy. | 585 |
16%
|
| 4 | Very easy | 1946 |
53.1%
|
| Sysmiss | 372 |