He is right, up to a point. The concentration of world income in the wealthiest quintile (fifth) of the world's population is indeed shocking and cannot meet any plausible test of legitimacy. The ...

This dashboard shows the distribution of income at a country and regional ... while the black dashed curve measures the accumulated share of income earned. The SEDLAC (CEDLAS and WB) harmonization is ...

the Gini coefficient (see Chart 1). The Gini is a summary statistic that gauges the average difference in income between any two individuals from the income distribution. It takes the value zero if ...

It is based on the Lorenz curve, a cumulative frequency curve that compares the distribution of a specific variable (for example, income) with the uniform distribution that represents equality. To ...