过去,我们一直用百分制的记分法,实践证明,使用这种记分法评价学生、教师缺乏可比性.通过对实用统计学习,我们认为,利用差异系数可以比较不同学科的教学质量. 下面列举我校初三某班期末物理、化学的考试成绩加以分析: 从平均分看,该班化学成绩比物理成绩好,或者说 In the past, we have always used the centenary scoring method. Practice has proved that using this scoring method to evaluate the lack of comparability of students and teachers. Through practical statistics learning, we believe that the difference coefficient can be used to compare the quality of teaching in different disciplines. The scores of the physical and chemical examinations at the end of a class in the third grade are analyzed: From the average point of view, the class chemistry score is better than the physical score, or