In 1915, Gaetano Pietra introduced a geometrical interpretation between Gini's proposed ratio and the ratio between the area of observed concentration and maximum concentration. This altered version of Gini coefficient became the most commonly used inequality index in upcoming years.
In 1915 Gaetano Pietra introduced a geometrical interpretation between Gini's proposed ratio and the ratio between the area of observed concentration and maximum concentration. This altered version of Gini coefficient became the most commonly used inequality index in upcoming years.