| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 690 |
16.3%
|
| 2 | Fairly difficult | 256 |
6%
|
| 3 | Fairly easy | 482 |
11.4%
|
| 4 | Very easy | 743 |
17.5%
|
| 5 | I don't know | 2065 |
48.7%
|
| Sysmiss | 65 |