异常值对义务教育均衡发展程度评估的影响

差异系数和基尼系数是义务教育均衡发展程度评估2种常用的测算方法，通过向正态分布数据中加入双侧异常值，以及向截尾正态分布数据中加入单侧异常值进行模拟研究。研究结果表明:异常值对差异系数的影响程度明显高于基尼系数。因此，在义务教育均衡发展程度评估中，应根据评估目的综合考量，选取合适的测算方法。

The InPact of Outliers on the Balanced DeveloPnent of ConPulsory Evaluation

The coefficient of variation and the Gini coefficient are two commonly used methods in the balanced de-velopment of compulsory evaluation. While adding the outliers to two-tail of normal data and adding the outliers to one-tail of truncated normal data by simulation,the impact of outliers on the coefficient of variation was significantly higher than the Gini coefficient. Therefore,choosing the appropriate method in the balanced development of compul-sory evaluation should be based on the purpose of evaluation.