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Question: How much do you agree with the following statements? - I usually manage one way or another.
Choices: "Strongly disagree" "Disagree" "Agree" "Strongly agree"
Data: % of "Strongly agree" "Agree"
Period:
Area:
10 countries/ areas
Highlight:
1 United States93.6%
3 Canada93.1%
5 France 92.4%
6 United Kingdom90.2%
8 Germany84.8%
9 Italy84.6%
10 Japan64.8%

Source
PISA 2018 Results (Volume III) : What School Life Means for Studentsf Lives

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data7
Regression equation
Y = 2.499550 X +4.429
Correlation coefficient (r)0.873
Coefficient of determination (R2)0.762

GDP per capita (current US$)
No. of data7
Regression equation
Y = 95512.659688 X -31611.414
Correlation coefficient (r)0.628
Coefficient of determination (R2)0.394

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -12.853689 X +92.596
Correlation coefficient (r)-0.621
Coefficient of determination (R2)0.386

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = 1.255242 X +0.392
Correlation coefficient (r)0.602
Coefficient of determination (R2)0.362

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = -2.473483 X +11.592
Correlation coefficient (r)-0.074
Coefficient of determination (R2)0.005