1, discrimination;

The degree of discrimination reflects the degree to which the test questions distinguish subjects of different levels, that is, to test students of different levels and truly distinguish excellent, average and poor students. Excellent, average and poor students all have a certain proportion. If students are relatively concentrated within a certain score range, there are too many high scores or too many failed exams, then the degree of discrimination is low.

2. difficulty;

Difficulty reflects the difficulty of the test questions, that is, the degree to which candidates lose points in a test question or a test paper. If the full score is 100, the average score is 76 and the average score is 24, then the difficulty coefficient is 0.24;

Extended data:

According to the students' answers to each test question, analyze and study the test paper and make an overall evaluation. According to the results of the trial or formal use of the questions, the reliability, validity, difficulty, discrimination and objectivity of the questions are analyzed. Its function is to evaluate the quality of test questions and provide feedback information for improving the writing level of test questions in the future; Find the problems in teaching as the basis for improving teaching.

The analysis of test questions is to classify test questions and separate their essence and internal relations. The evaluation of the whole test paper is mainly described by two indicators: validity and reliability.