| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 4321 |
36.5%
|
| 2 | Fairly difficult | 2583 |
21.8%
|
| 3 | Fairly easy | 1492 |
12.6%
|
| 4 | Very easy | 3431 |
29%
|
| Sysmiss | 55 |