A measure of the spread or dispersion of a probability distribution. Let X1 and X2 be independent random variables with this distribution; then the Gini statistic is the expected value of |X1−X2|.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。