| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult. | 1163 |
57%
|
| 2 | Fairly difficult. | 371 |
18.2%
|
| 3 | Fairly easy. | 145 |
7.1%
|
| 4 | Very easy | 361 |
17.7%
|
| Sysmiss | 7 |