关于单项选择题与多项选择题概率难度的比较

About the comparison of probability difficulties between one-choice questions and multiple-choice questicns

在标准化考试中对单项选择题和多项选择的难度进行比较是很有意义的。本文首先给出了频率难度和概率难度的概念 ,其次是对两种题型下备选答案的难度与试题的难度的关系进行分析、比较 ,最后得出了在标准化考试中 ,当单项选择题与多项选择题在规定满分相同的情况下 ,单选题的备选答案应该难些 ,多选题的备选答案应该简单些才合理 ;而当二者的备选答案难度相同时 ,单选题的规定满分应该少些 。

It is meaningful to compare the difficulty of one-choice questions with that of multiple-Choice questions in a standardized examinaticn.Firstly, the paper puts forward the ideas:frequency difficulty and probability difficulty. Secondly, it analizes and compares the relations between the difficulty of the questions and the difficulty of the ready answers.Finally,it comes to the conclusion:it is reasonable that,in a standardized examination,the ready answers to one-choice questiens are more difficult than the answers to multiple-choice quenstions if their assigned full marks are both the same.However,if the difficulties of the ready answers to the two types are both the same,the assigned full marks of one-choice questians should be less than these of multiple-choice questions.