Tweet
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 Japan 78.9%
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 = 4.469713 X +3.242
Correlation coefficient (r)0.714
Coefficient of determination (R2)0.510

GDP per capita (current US$)
No. of data10
Regression equation
Y = 114522.863923 X -40533.621
Correlation coefficient (r)0.745
Coefficient of determination (R2)0.555

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -9.989082 X +89.763
Correlation coefficient (r)-0.388
Coefficient of determination (R2)0.151

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = 2.413128 X -0.440
Correlation coefficient (r)0.668
Coefficient of determination (R2)0.446

Suicide - all ages (per 100,000 population)
No. of data10
Regression equation
Y = -24.199137 X +33.044
Correlation coefficient (r)-0.311
Coefficient of determination (R2)0.097