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How can you evaluate it as an excellent questioner to be distributed on suspected group of study to answer? what are the steps done to design it? what should we avoid in preparing such questioner?
It is not random and easy to design a questionnaire. It is a tough work to do. There are several methods to do so. Designing a questionnaire is usually a study per se. Almost of researchers adopt a well established pre-designed survey/questionnaire for their studies.