This Demonstration plots "satisfaction with life" data from the "World Database of Happiness"  against some economical and related properties in 148 countries. A linear model fit shows the significance of the relationships. Some properties are causes of happiness, others are consequences.
 R. Veenhoven. "Average Happiness in 149 Nations 2000–2009." World Database of Happiness. (Jan 9, 2011) www1.eur.nl/fsw/happiness/hap_nat/nat_fp.php?mode=6.