| Value |
Category |
| 1 |
Did not use calculator |
| 2 |
Used calculator very little |
| 3 |
Used calculator somewhat |
| 4 |
Used a calculator a lot |
| 8 |
not admin. |
| 9 |
missing |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.