Lorenz Curve

http://www.biocrawler.com/w/images/b/bd/Lorenz-curve1.png

A Lorenz Curve is a graph portraying the proportion of a specific distribution by utilizing the bottom percent of the values. If the Lorenz Curve is straight, this implies that all of the values are equal, it is called the "line of equality". When the values are not all equal, the curve line falls under the line of equality. The Lorenz Curve is often used in economics and ecology. In this graph, the green line represents the line of equality, the red line represents the Lorenz curve, and the blue line represents the line of perfect inequality.