【摘要】 目的:探讨试题难度、试卷平均分等目标值的设计方法。方法:将试题的难度为纵坐标,将试题累计分为横坐标建立难度坐标系,根据最低分、平均分和难度等指标绘制试题难度曲线。结果:试题难度曲线可以清晰直观地反映出试卷各题的难度、满分值等指标。结论:可以利用试题难度曲线进行试题难度、试卷平均分等考试目标值的设计。更多还原

【Abstract】 Objective: To study the design method of item difficulty,the average score and other target values of a test paper.Methods: The coordinate system was established,with item difficulty being the vertical coordinate and the test questions abscissa.The difficulty curve was then plotted according to the indexes: the lowest mark,the average score,difficulty level,etc.,Results: The difficulty curve can clearly and directly reflect such indexes as item difficulty,the full mark,the lowest target mark,and the target average score,etc,.Conclusion: The difficulty curve can be used to design such target values of a test as item difficulty,average scores,etc.更多还原