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Cantril ladder. The evaluation of life by imagining life as a ladder, with the best possible life for them as a 10, and the worst possible life as a zero.
Period:
Area:
10 countries/ areas
Highlight:
3 Canada6.931
4 United States6.748
5 United Kingdom6.720
6 France 6.645
7 Germany6.616
8 Italy6.171
9 Japan5.957

Source
Helliwell, J. F., Layard, R., Sachs, J. D., De Neve, J.-E., Aknin, L. B., & Wang, S. (Eds.). (2024) World Happiness Report 2024. University of Oxford: Wellbeing Research Centre.

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data7
Regression equation
Y = 0.827439 X +1.171
Correlation coefficient (r)0.986
Coefficient of determination (R2)0.972

GDP per capita (current US$)
No. of data7
Regression equation
Y = 29574.749867 X -142718.521
Correlation coefficient (r)0.664
Coefficient of determination (R2)0.441

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -3.859946 X +106.763
Correlation coefficient (r)-0.636
Coefficient of determination (R2)0.404

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = 0.339576 X -0.747
Correlation coefficient (r)0.556
Coefficient of determination (R2)0.309

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = 1.568950 X -0.803
Correlation coefficient (r)0.161
Coefficient of determination (R2)0.026