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Sagot :
Public-opinion polling takes place throughout the entire campaign.
An unbiased scientific opinion poll is a type of survey or inquiry designed to determine public opinion on a specific issue or set of issues. Trained interviewers ask questions to people randomly selected from the population to be measured.
Based on the results, answers are given and interpretations are made. With a random sample, it is important that all members of the population under investigation have the same chance of participating. Otherwise, the results could be biased and therefore not representative of the population.
Representative samples are selected in order to make generalizations about a particular population studied.
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