Apply Grey Entropy to Enhance the Completeness of Questionnaire in Education

As for the analysis of reliability and validity, they are applied to screen the questions of the questionnaire and determine the suitability of the questions, especially in the educational field. However, the results obtained from the questionnaire still cannot reach a decision. Hence, the paper provides the method of entropy, which uses randomness as the starting point, to quantify the uncertain problems and to offer auxiliary analysis of the results. Also, the method of entropy can make more complete results. First, the mathematics model of entropy is introduced in the paper followed by two examples. The reasonableness of the results of the questionnaire will be based on analyzing the factors´ weighting. Besides, the Matlab GUI is used as the auxiliary tool to calculate the huge data. As the results, the method which proposed in this paper not only can verify the advantage of entropy, but also to achieve the integrity of complete educational questionnaire.