| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 30 |
20.4%
|
| 2 | 1 2 | 14 |
9.5%
|
| 3 | 1 2 3 | 33 |
22.4%
|
| 4 | 1 3 | 19 |
12.9%
|
| 5 | 2 | 5 |
3.4%
|
| 6 | 2 3 | 4 |
2.7%
|
| 7 | 3 | 10 |
6.8%
|
| 8 | 3 4 | 1 |
0.7%
|
| 9 | 4 | 2 |
1.4%
|
| 10 | Charts on the wall | 1 |
0.7%
|
| 11 | Textbooks | 22 |
15%
|
| 12 | Textbooks Charts on the wall | 5 |
3.4%
|
| Sysmiss | 1 |