| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult. | 1100 |
54%
|
| 2 | Fairly difficult. | 316 |
15.5%
|
| 3 | Fairly easy. | 157 |
7.7%
|
| 4 | Very easy | 464 |
22.8%
|
| Sysmiss | 10 |