机构地区: 广东省农业管理干部学院财经系
出 处: 《电脑知识与技术》 2006年第5期196-197,共2页
摘 要: 通过方差和标准差的计算,分析评估分数,认为以下三种评分是可以剔除的:一是n个评分项的方差为0;二是m位教师的原始得分的方差为0;三是某位教师的某个得分与其任课班的总体数学期望的绝对差大于2倍该班的所有任课教师原始得分的总体标准差。 There are three types data that can be rejected by counting the variance and the standard deviation by analyzing the evaluated determine work points, The first, the variance of n items' points is equal to 0,the second, the variance ofm teachers' determine work points is equal to 0,the last, the absolute value which a certain teacher' s point minus the mathematical expectation of all points of the class which being taught by the teacher is morn than twice all points' total standard deviation.
领 域: [自动化与计算机技术] [自动化与计算机技术]