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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 Sweden83.4%
5 Australia82.0%
6 Germany79.9%
7 Japan78.9%
8 France 77.0%
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 = 4.887530 X +2.925
Correlation coefficient (r)0.705
Coefficient of determination (R2)0.497

GNI per capita, Atlas method (current US$)
No. of data10
Regression equation
Y = 93098.817945 X -26742.488
Correlation coefficient (r)0.712
Coefficient of determination (R2)0.507

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -9.006437 X +89.169
Correlation coefficient (r)-0.440
Coefficient of determination (R2)0.194

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = 2.494636 X -0.399
Correlation coefficient (r)0.698
Coefficient of determination (R2)0.487

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