To test the quality of the tools used in research so that the query quality. Researchers have been testing the quality of the questionnaires, the precise content of the query by doing the following:
To test the quality of the instruments used in research to provide quality questionnaire. Researchers have tested the quality of the questionnaire for accuracy of content. The query by the following:
Testing the quality of the instruments used in this study to survey quality. Moreover, the quality of the content validity questionnaire. The reliability of the process as follows.