The reasons for the error of the evaluation results are as follows

There are many reasons for the error of evaluation results. Here are some common reasons:

1. Problems with the measuring tool: If there are problems with the measuring tool itself, such as unreasonable questionnaire design, incomplete test contents, insufficient test time, etc. , which will lead to errors in the test results.

2. Subjects' problems: Individual factors, emotions, health status, experience and cultural background of the subjects will affect the accuracy of the test results.

3. Environmental problems: Noise, temperature, light and personnel density in the test environment will affect the accuracy of the test results.

4. Testers' problems: Testers' subjective judgment, test skills, test experience and test attitude will all affect the accuracy of test results.

5. Data processing: Data processing methods and data analysis tools will affect the accuracy of test results.

To sum up, there are many reasons for the error of evaluation results, and it is necessary to strictly control all links in the actual detection process to ensure the accuracy and reliability of the detection results.