| Value | Category | Cases | |
|---|---|---|---|
| 1 | VERY EASY | 227 |
8.7%
|
| 2 | 262 |
10%
|
|
| 3 | 473 |
18.1%
|
|
| 4 | 503 |
19.3%
|
|
| 5 | VERY DIFFICULT | 1142 |
43.8%
|
| Sysmiss | 181 |