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Question: How much do you agree with the following statements? - My belief in myself gets me through hard times.
Choices: "Strongly disagree" "Disagree" "Agree" "Strongly agree"
Data: % of "Strongly agree" "Agree"
Period:
Area:
10 countries/ areas
Highlight:
1 Republic of Korea77.1%
2 United States75.1%
3 Italy72.0%
4 Canada70.6%
5 Germany68.3%
6 Australia66.9%
7 Sweden65.6%
8 United Kingdom58.7%
9 France 58.5%
10 Japan56.3%

Source
PISA 2018 Results (Volume III) : What School Life Means for Studentsf Lives

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data10
Regression equation
Y = -0.291717 X +6.973
Correlation coefficient (r)-0.040
Coefficient of determination (R2)0.002

GNI per capita, Atlas method (current US$)
No. of data10
Regression equation
Y = 10846.814361 X +38234.397
Correlation coefficient (r)0.077
Coefficient of determination (R2)0.006

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -7.457578 X +87.210
Correlation coefficient (r)-0.340
Coefficient of determination (R2)0.116

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = -1.958459 X +2.877
Correlation coefficient (r)-0.514
Coefficient of determination (R2)0.264

Suicide - all ages (per 100,000 population)
No. of data10
Regression equation
Y = 33.435172 X -8.401
Correlation coefficient (r)0.403
Coefficient of determination (R2)0.162