Sample surveys today make up a varied and often indispensable source of information. Whether at the level of governments, company managers, sociologists, economists, or ordinary citizens, surveys allow the informational needs necessary in taking a decision to be met. For example, to establish their policies concerning certain economic sectors, governments must have a picture of the situation before taking decisions concerning these sectors.
KeywordsSelection Probability Sampling Frame Cluster Sampling Simple Random Sampling Estimation Weight
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