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The volume of the questionnaire. People often ask how many questions should be in the questionnaire and how much time to fill it should take? If you focus on medium complexity questionnaire, the easiest and correct answer is: on average, 50-70 questions, time is 30-40 minutes.Some sociologists are fond of large questionnaires containing 100-200 and even more questions and occupying time to answer two or more hours. The compiler of this form is not the Respondent thinks about and cares about is to ask as many questions as possible. It is assumed that the Respondent will stand. It is naive to assume that the respondents must answer all questions in this ignorance affects methodological inexperience of the researcher.Practice shows that the large questionnaire, which occupies time more than 40 minutes, tiring of the respondents, decreases the performance of the survey: reduced activity of the respondents, their interest in the work, and eventually we get a poorly completed questionnaire. Experience shows a clear correlation between the number of questions in the questionnaire and the number of failures. Any sociologist can check it by counting how increasing the number of response depending on the number of questions. On average, such reduction is in the range of 3-15%.But it would be wrong unduly to strictly regulate the volume of the questionnaire, i.e. the number of questions and time for its completion. Although there are reasonable limits and boundaries of the volume forms, but in each case its volume is due primarily to substantive issues of the study and a number of subjective and objective factors.
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