Analysis by differentiation and difficulty:

1, differentiation;

Differentiation reflects the degree to which the test questions differentiate between different levels of subjects, that is, to test out the different levels of the students, the excellent, average, poor three levels of students really separate. High distinction degree of examination, excellent, general, poor three levels of students have a certain proportion, if a certain score range of students are relatively concentrated, too many high scores or too many failing the examination, the distinction degree is low.

2, difficulty;

Difficulty reflects the degree of difficulty of the test questions, that is, the candidates in a test question or a paper in the degree of loss of points. For example, for a test question of 100 points, the average score of candidates is 76 points, and the average number of points lost is 24 points, then the coefficient of difficulty is 0.24;

Expanded Information:

Analyzes and studies test papers and makes holistic evaluations based on students' answers to each test question. The reliability, validity, difficulty, differentiation and objectivity of the test questions are analyzed based on the results of the test questions after trial or formal use. Its role is to assess the quality of the test questions, to provide feedback for the future improvement of the level of preparation of test questions; find problems in teaching, as a basis for improving teaching.

Test question analysis that the test questions are divided into categories, analyze the nature and inner connection. The evaluation of the whole test question is mainly described by two indicators: validity and reliability.