首先我们要看试卷的信度。什么是信度?信度是指测验结果的可靠性和稳定性,或者说是同一测验对学生前后几次施测的结果之间的一致性程度。例如我们用钢尺去测量课桌的高度,所得到的结果是可靠的、稳定的,因为无论是由一个人多次去测量还是换成其他人去测量,所测得的课桌高度都是一致的,这就是测量的信度。假如我们不用钢尺去测量,改用皮尺去测量课桌高度,那么一个人多次测量或多人测量的结果就很难一致,也就是说皮尺因每次测量人用力不同,测量结果有误差。同理,在考试中,如果试卷的信度不高,考试的成绩就不能真实地反映一个学生对所学知识与技能掌握的情况,也就不能达到考试的目的。一般来说,重要的选拔性考试,其信 First of all, we want to see the reliability of the test paper. What is reliability? Reliability refers to the reliability and stability of the test results, or the consistency of the same test on the results of several tests before and after the students. For example, we use a steel ruler to measure the height of the desks. The results obtained are reliable and stable, because no matter how many times a person surveys or changes to another person to measure, the height of the desks measured is Consistent, this is the measurement of the reliability. If we do not use steel ruler to measure, use a tape measure to measure the height of the desk, then the results of multiple measurements or multi-person measurement is difficult to be consistent, that is to say, . Similarly, in the exam, if the test paper’s reliability is not high, the test scores can not truly reflect a student’s knowledge and skills to master the situation, it can not achieve the purpose of the exam. In general, the important test of choice, the letter