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Refers to 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. Sampling individuals for surveys in stratified populations may require more complex sampling than simple random to get more precise estimates of population parameters. Sampling design and analysis of survey data fall under 'Survey Methodology'.

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I'm a resident physician working on my doctor's thesis and I'm trying to analyse data from a survey with R. I have basic mathematic and rookie statistics skills. Participants of the survey have been …
asked Mar 22 by Pascal J