Taking college students as samples, the questionnaires are distributed using forms. After deducting invalid questionnaires, a total of 302 valid questionnaires
Using the questionnaire as a sample of college students, a total of 302 valid questionnaires were distributed using forms, and after deducting invalid questionnaires,
Take college students as samples, use forms to send out questionnaires. After deducting invalid questionnaires, there are 302 valid questionnaires in total<br>