Gini index
n.— «The Census Bureau measures income disparity through an established method called the Gini index—named after Italian statistician Corrado Gini. The index measures the gap among incomes of all households.» —“Income gap closes in rural suburbs, Census says” by Haya El Nasser, Paul Overberg USA Today Sept. 13, 2007. (source: Double-Tongued Dictionary)
Further reading
Enthusiastic book recommendations! Martha’s savoring the biography of Alexander von Humboldt, the 19th-century explorer, polymath, and naturalist who revolutionized our understanding of nature and predicted the effects of human activity on...
Astronauts returning from space say they experience what’s called the overview effect, a new understanding of the fragility of our planet and our need to reflect on what humans all share as a species. A book about the end of the universe...