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An instrument used to collect a sample from a population. Surveying often refers to sampling of human populations and is primarily done by administering questionnaires or interviewing individuals.
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votes
Surveys: Is 25% of a large user base representative?
This means that if 48% of people in the survey were male, then the range possible is 48% +/- 3%, or 45% to 51%. … For example, if the previous response rate was 65%, the you would need to send the survey instrument to $517/0.65=796$ people. …