| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 4219 |
35.9%
|
| 2 | Fairly difficult | 2343 |
19.9%
|
| 3 | Fairly easy | 1059 |
9%
|
| 4 | Very easy | 4140 |
35.2%
|
| Sysmiss | 121 |