独立评分考生成绩统计量模型的构造  

On the Construction of Statistical Estimation of the Teacher's Independent Score

作　　者：田俊忠[1] 

机构地区：[1]北方民族大学基础教育学院,中国银川750021

出　　处：《湖南师范大学自然科学学报》2015年第6期68-72,共5页Journal of Natural Science of Hunan Normal University

基　　金：国家自然科学基金前期培育项目(2011QZP08)

摘　　要：如何综合阅卷教师的独立评分,科学合理地确定考生的成绩,是主观性评价网上阅卷的关键问题之一.提出了考生获得各个分数值的难度系数的新概念,认为考生试卷成绩的确定不能是简单的平均值,应该是考虑分数值难度系数的加权平均,根据随机独立专家评分构造了高考作文网上阅卷考生成绩的统计量模型.该模型对于各种类型的主观性评价网上阅卷的成绩确定具有广泛的应用.How to calculate teacher＇s independent score scientifically and reasonably determine the examinee＇s score,is a key issue in the subjective evaluation of the online marking. The new concept of the difficulty coefficient that the examinee obtain each score was proposed. It is considered that the examinee＇s score can not be a simple average,it should be the weighted average of the difficulty coefficient. Based on its randomness and independence,the statistical estimation model of the examinee＇s score of online marking was constructed. The model has a wide practical application for all kinds of subjective evaluation of online marking.

关 键 词：难度系数 成绩统计量 一致最小方差无偏估计 数学模型 

分 类 号：O212.2[理学—概率论与数理统计]