A: test analysis b: mechanism analysis c: result analysis d: data fitting

Extension of basic definition of test analysis;

Test analysis is to evaluate the testability level of products through inherent testability evaluation, testability prediction and testability cost prediction to ensure the effective integration and compatibility of testability with other diagnostic elements.

Testing refers to a design feature that a product can determine its state in time and accurately, and isolate its internal faults. Testability analysis is an important part of product design analysis, which is related to the formulation and implementation of diagnosis scheme. The purpose of testability analysis is to verify whether the proposed method meets the design requirements.

The role of test analysis:

1, analysis difficulty: difficulty refers to the difficulty of the test questions. A test question, if most of the subjects can answer correctly, is not difficult; If most subjects can't be answered correctly, the project will be difficult. Test difficulty affects the distribution of test scores. The difficulty of the test directly depends on the difficulty of the test items.

2. Discriminant analysis: Discriminant analysis refers to the difference of psychological quality level of the test items. One of the most important purposes is to push the test forward and strengthen the activities in the test requirements analysis stage.