A world of difference
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The world Gmi data, collected between 2008 and 2012, cover 117 countries and were prepared for Sctence by researchers Branko Mitanovic and Janet Gorrick of the Luxembourg Income Study Center at the City University of New York’s Graduate Center.
Economists use a metric called the Gmi coefficient to estimate inequality on a scale from perfectly equal (0) to perfectly unequal (1).