# Correlational findings

## Study OECD (2017): study US 2015

Public
15-16 aged, secundary school students, United States of America, 2017
Survey name
INT-PISA 2015
Sample
Respondents
N = 5712
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 O-SLW-c-sq-n-11-b = + ns Score decile        Mean Happiness
1                      7,17
2                      7,37
3                      7,48
4                      7,43
5                      7,39
6                      7,31
7                      7,28
8                      7,33
9                      7,44
10                     7,36

difference 10-1:      +0,19
O-SLW-c-sq-n-11-b = + ns Score quarter       Mean Happiness
Bottom                 7,31
Second                 7,43
Third                  7,31
Top                    7,38

difference Top-Bottom:+0,07