| 一种离散型随机变量二项分布函数的应用 |
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| 引用本文： | 苏文,包佃清.一种离散型随机变量二项分布函数的应用[J].四川理工学院学报(自然科学版),2011,24(5):590-592. |
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| 作者姓名： | 苏文 包佃清 |
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| 作者单位： | 1. 连云港职业技术学院信息工程学院,江苏连云港,222006
2. 连云港师范高等专科学校计算机系,江苏连云港,222006 |
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| 基金项目： | 江苏省现代教育技术研究2011年度重点课题 |
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| 摘 要： | 简介了经典测试理论,分析了组卷问题的数学模型和常见的组卷算法,提出一种基于二项分布原理的优化随机组卷算法。在组卷过程中,以难度系数为主要控制指标,知识点指标为辅,可以很好地解决试卷的难度控制问题,能够使得试题平均难度系数接近正态分布,符合组卷要求。通过四场摸拟考试与数据得出实验数据呈正态分布,信度是83.22,总体来看...
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| 关 键 词： | 经典测试理论 二项分布 难度系数 |
Application of Binomial Distribution Function with Discrete Random Variables |
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| SU Wen,BAO Dian-qing.Application of Binomial Distribution Function with Discrete Random Variables[J].Journal of Sichuan University of Science & Engineering:Natural Science Editton,2011,24(5):590-592. |
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| Authors: | SU Wen BAO Dian-qing |
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| Institution: | 1.Dept of Information Engineering,Lianyungang Technical College,Lianyungang 222006,China;2.Dept of Computer Science,Lianyungang Normal College,Lianyungang 222006,China) |
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| Abstract: | Classical test theory is firstly introduced,the mathematic model and the common calculation methods of Exam-paper Formation are analyzed,and an optimized random calculation method based on binomial distribution principle is put forword.In the composition of examination paper,difficulty coefficient as the main control index can solve the difficulty of paper control problem,and make the test average difficulty coefficient is close to normal distribution.The conclusion is test scores for the normal distribution,reliability was 83.22 through the simulation experiment.Test validity is high with expectations. |
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| Keywords: | classical test theory binomial distribution degree of difficulty |
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