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Question: Thinking about your school: to what extent do you agree with the following statements? - Trying hard at school is important.
Choices: "Strongly disagree" "Disagree" "Agree" "Strongly agree"
Data: % of "Agree" "Strongly agree"
Period:
Area:
10 countries/ areas
Highlight:
1 Japan93.0%
3 United Kingdom 90.5%
4 United States90.0%
5 Italy87.7%
8 Germany85.9%
9 Canada84.8%
10 France83.8%

Note
The data of Azerbaijan are collected only in Baku. The data of China are collected only in Beijing, Shanghai, Jiangsu, and Zhejiang.

Source
OECD PISA 2018 Compendia

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data7
Regression equation
Y = -4.802459 X +10.808
Correlation coefficient (r)-0.554
Coefficient of determination (R2)0.307

GDP per capita (current US$)
No. of data7
Regression equation
Y = -24432.498099 X +72224.270
Correlation coefficient (r)-0.053
Coefficient of determination (R2)0.003

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = 7.045973 X +75.317
Correlation coefficient (r)0.112
Coefficient of determination (R2)0.013

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = -1.781670 X +3.041
Correlation coefficient (r)-0.282
Coefficient of determination (R2)0.080

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = 26.582016 X -13.921
Correlation coefficient (r)0.264
Coefficient of determination (R2)0.070