# Correlational findings

## Study OECD (2017): study TN 2015

Public
15-16 aged, secundary school students, Tunisia, 2017
Survey name
INT-PISA 2015
Sample
Respondents
N = 5375
Non Response
Assessment
Questionnaire: Conputer Assisted Web Interview (CAWI)

## Correlate

Authors's Label
School performance in mathematics
Our Classification
Distribution
Deciles and quartiles
Operationalization
Mathematical performance, for PISA, measures the mathematical literacy of a 15 year-old to formulate, employ and interpret mathematics in a variety of contexts to describe, predict and explain phenomena, recognising the role that mathematics plays in the world. The mean score is the measure. A mathematically literate student recognises the role that mathematics plays in the world in order to make well-founded judgments and decisions needed by constructive, engaged and reflective citizens.

## Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks C-BW-c-sq-l-11-e = + ns Score decile        Mean Happiness
1                      6,71
2                      6,86
3                      6,94
4                      6,95
5                      6,98
6                      6,87
7                      6,92
8                      6,90
9                      6,86
10                     7,00

difference 10-1:      +0,29
C-BW-c-sq-l-11-e = + ns Score quarter       Mean Happiness
Bottom                 6,81
Second                 6,97
Third                  6,90
Top                    6,92

difference Top-Bottom:+0,11