Gini Coefficient

例句：

1. 1.The Gini coefficient measures the inequality of income distribution in a country.
   吉尼系数衡量一个国家收入分配的不平等程度。
2. 2. The Gini coefficient is used to calculate the degree of income inequality in a country.
   吉尼系数用于计算一个国家的收入不平等程度。
3. 3.The Gini coefficient has been widely used to measure the wealth distribution in different countries.
   吉尼系数被广泛用于衡量不同国家财富的分布情况。