| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult. | 315 |
15%
|
| 2 | Fairly difficult. | 168 |
8%
|
| 3 | Fairly easy. | 155 |
7.4%
|
| 4 | Very easy | 1467 |
69.7%
|
| Sysmiss | 28 |