| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult. | 499 |
37.9%
|
| 2 | Fairly difficult. | 367 |
27.9%
|
| 3 | Fairly easy. | 160 |
12.2%
|
| 4 | Very easy. | 290 |
22%
|
| Sysmiss | 32 |