区分度是指试题对被试者情况的分辨能力的大小，主要用于评价以选拔为目的的选题。 试卷区分度反映试题区分不同水平受试者的程度，即考出学生的不同水平，把优秀、一般、差三个层次的学生真正分别开。区分度高的考试，优秀、一般、差三个层次的学生都有一定比例，如果某一分数区间学生相对集中，高分太多或不及格太多的考试，区分度则低。
在试题质量分析的基础上，对试题的难度、区分度、信度和效度建立了定量评价模型。
Based on the analysis of test paper quality, this paper constructs the evaluation model for difficult degree, differentiating degree, confident degree and effective degree of test paper.
为试题设置了知识点、难度、区分度等参数，为智能组卷策略的实现和试卷分析提供了必要的参考依据；
And it also sets the necessary parameters of questions, difficulties, differences and provides the references for realizing the intelligent combination and analyzing of test paper.
结果表明此次试卷设计较合理，平均分数82.26，分数近似正态分布，试题难度和区分度属中等。
The results showed that the scores was Gassion distribution, the average score was 82.26, and the difficulty and discrimination of the test paper were appropriate.
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