(a) By grade. | |||
---|---|---|---|
Grade | Correlation | # students | # sessions |
3rd | 0.386 | 172 | 4510 |
5th | 0.478 | 562 | 17,043 |
7th | 0.448 | 17 | 503 |
(b) By grade with the outlier data. | |||
---|---|---|---|
Grade | Correlation | # students | # sessions |
3rd | 0.049 | 915 | 158,749 |
5th | 0.031 | 1831 | 198,256 |
7th | −0.020 | 150 | 8998 |
(c) By grade and parental educational level (edu). Parental educational level is coded from 1 (low) to 7 (highest) in accordance with isced 1997. | ||||
---|---|---|---|---|
Grade | Edu | Correlation | # students | # sessions |
3rd | 3 | 0.080 | 28 | 817 |
4 | 0.505 | 6 | 170 | |
5 | 0.419 | 34 | 715 | |
6 | 0.475 | 81 | 2291 | |
7 | 0.008 | 23 | 517 | |
5th | 1 | NaN | <5 | NaN |
2 | 0.023 | 22 | 526 | |
3 | 0.294 | 141 | 3921 | |
4 | 0.491 | 31 | 1131 | |
5 | 0.380 | 174 | 5546 | |
6 | 0.590 | 155 | 4856 | |
7 | 0.746 | 33 | 981 | |
7th | 3 | 0.349 | 6 | 201 |
4 | NaN | <5 | NaN | |
5 | NaN | <5 | NaN | |
6 | 0.386 | 7 | 227 | |
7 | NaN | <5 | NaN |
(d) By grade and parental income. Parental income is split into below and above the median income in Denmark. | ||||
---|---|---|---|---|
Grade | Low income | Correlation | # students | # sessions |
3rd | High income | 0.393 | 132 | 3390 |
Low income | 0.360 | 40 | 1120 | |
5th | High income | 0.522 | 359 | 11,179 |
Low income | 0.402 | 203 | 5864 | |
7th | High income | 0.295 | 10 | 337 |
Low income | 0.655 | 7 | 166 |
(e) By grade and sex. | ||||
---|---|---|---|---|
Grade | Sex | Correlation | # students | # sessions |
3rd | Boys | 0.330 | 80 | 2288 |
Girls | 0.456 | 92 | 2222 | |
5th | Boys | 0.596 | 247 | 6902 |
Girls | 0.380 | 315 | 10,141 | |
7th | Boys | 0.604 | 10 | 360 |
Girls | 0.019 | 7 | 143 |