Gini coefficient
The Gini coefficient is usually a number between 0 and 1 (or 0 to 100). 0  means a country where the income is equally distributed. On the other hand, 1 means that one person owns everything but the rest owns nothing. In reality, all scores are between 0.25 and 0.6 (between 25 and 60 on the 0 to 100 scale).