| Study | OECD (2017): study IS 2015 |
| Title | PISA 2015 Results. Students' Well-Being. Volume III. |
| Source | OECD Publishing, 2017, Paris, France |
| URL | http://www.oecd-ilibrary.org/education/pisa-2015-results-volume-iii_9789264273856-en |
| Public | 15-16 aged, secundary school students, Iceland, 2017 |
| Sample | Probability multi-stage random |
| Non-Response | |
| Respondents N = | 3374 |
| Correlate | |
| Author's label | After school study time |
| Page in Source | 247+TableIII.3.10AnnexB.p514 |
| Our classification | Homework |
| Operationalization | Selfreport on question about 4 subjects: 'This schoolyear, approximately how many hours per week do you spend learning in addition to your required school schedule in the following subjects (included the hours for homework, additional instruction, and private study): - mathematics - test language - foreign language - other (Slider range: 0 - '30 hours per week or more') |
| Observed distribution | quartiles presented, M hours= 15 SD = 12 |
| Observed Relation with Happiness | ||
| Happiness Measure | Statistics | Elaboration/Remarks |
| C-BW-c-sq-l-11-e | DM=- ns | 4 M= 7,71 3 M= 7,86 2 M= 7,89 1 M= 7,83 4-1 difference -0,12 |
| Code | Full Text |
| C-BW-c-sq-l-11-e | Selfreport on single question: Here is a picture of a ladder. The top of the ladder '10' represents the best possible life for you and the bottom '0' is the worst possible life for you. In general , where on the ladder do you feel you stand at the moment? Tick the box next to the number that best describes where you stand 10 best possible 9 8 7 6 5 4 3 2 1 0 worst possible life |
| Symbol | Explanation |
| DM | DIFFERENCE of MEANS Type: descriptive statistic only. Measurement level: Correlate: dichotomous, Happiness: metric Range: depending on the happiness rating scale of the author; range symmetric about zero. Meaning: the difference of the mean happiness, as measured on the author's rating scale, between the two correlate levels. |