gini和便便关系 Gini.docVIP

gini和便便关系 Gini Gini coefficient From Wikipedia, the free encyclopedia Graphical representation of the Gini coefficient The Gini coefficient is a measure of inequality of a distribution. It is defined as a ratio with values between 0 and 1: the numerator is the area between the Lorenz curve of the distribution and the uniform distribution line; the denominator is the area under the uniform distribution line. It was developed by the Italian statistician Corrado Gini and published in his 1912 paper Variabilit?e mutabilit? (Variability and Mutability). The Gini index is the Gini coeffic