| Value | Category | Cases | |
|---|---|---|---|
| 1 | Difficult to understand and boring | 52 |
10.4%
|
| 2 | Easy to understand but boring | 71 |
14.3%
|
| 3 | Difficult to understand but interesting | 114 |
22.9%
|
| 4 | Easy to understand and interesting | 261 |
52.4%
|
| Sysmiss | 908 |