What is the reliability and validity of the paper?

It should be above 0.7.

Questionnaire analysis mostly adopts reliability and validity analysis, and even generally requires mature questionnaires, which are applicable to both undergraduate and graduate papers.

Reliability and validity are the prerequisites for the quality of the questionnaire. If the reliability and validity of the questionnaire are good, it proves that the data of the questionnaire are reliable and the internal consistency of the questionnaire data is high, which can be used for subsequent modeling and analysis.

If the reliability and validity are not high, the questionnaire may need to be redesigned and distributed.

Reliability refers to the consistency, stability and reliability of test results. Refers to the degree of consistency when the same object is measured repeatedly by the same method.

What is the technological innovation and progress of Xiamen's construction industry?

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As seen in the paper, accidents are usually caused by many reasons, so the sum of frequencies here is greater than 1. Can the sum of frequencies be greater than 1?

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