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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:
2 Canada7.343
4 United States7.258
5 United Kingdom6.812
6 Germany6.734
7 France 6.524
8 Japan6.146
9 Italy6.119

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 = 0.524765 X +3.065
Correlation coefficient (r)0.875
Coefficient of determination (R2)0.766

GDP per capita (current US$)
No. of data7
Regression equation
Y = 25714.940667 X -121688.208
Correlation coefficient (r)0.808
Coefficient of determination (R2)0.653

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -3.323368 X +103.798
Correlation coefficient (r)-0.767
Coefficient of determination (R2)0.588

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = 0.159810 X +0.403
Correlation coefficient (r)0.366
Coefficient of determination (R2)0.134

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = 3.155574 X -11.699
Correlation coefficient (r)0.454
Coefficient of determination (R2)0.206