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Question: 1. Did you smile or laugh a lot yesterday? 2. Did you experience enjoyment during a lot of the day yesterday? 3. Did you experience happiness during a lot of the day yesterday?
Choices: "Yes" "No"
Data: The average of the percentages of "Yes" to the three questions.
Period:
Area:
10 countries/ areas
Highlight:
1 Canada87.2%
2 United Kingdom84.5%
3 United States84.4%
4 Sweden 83.4%
5 Australia82.0%
6 Germany79.9%
7 Japan78.9%
8 France77.0%
9 Republic of Korea66.1%
10 Italy64.8%

Source
John Helliwell, Richard Layard and Jeffrey Sachs (eds.) World Happiness Report 2013

Original source
Gallup World Poll.

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data10
Regression equation
Y = 5.670693 X +2.268
Correlation coefficient (r)0.778
Coefficient of determination (R2)0.605

GNI per capita, PPP (current international$)
No. of data10
Regression equation
Y = 53756.416380 X +6718.193
Correlation coefficient (r)0.596
Coefficient of determination (R2)0.355

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -0.086649 X +0.888
Correlation coefficient (r)-0.437
Coefficient of determination (R2)0.191

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = 2.443001 X -0.327
Correlation coefficient (r)0.686
Coefficient of determination (R2)0.471

Suicide - all ages (per 100,000 population, age-adjusted)
No. of data10
Regression equation
Y = -9.012503 X +18.734
Correlation coefficient (r)-0.171
Coefficient of determination (R2)0.029