| Value | Category | Cases | |
|---|---|---|---|
| 1 | No science homework | 158 |
23.8%
|
| 2 | Less than once a week | 179 |
27%
|
| 3 | 1 or 2 times a week | 253 |
38.1%
|
| 4 | 3 or 4 times a week | 56 |
8.4%
|
| 5 | Every day | 18 |
2.7%
|
| Sysmiss | 336 |