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What is sampling design?how to apply two stage stratified systematic random sampling?

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Question added by Adane Tihar , statistician , central statistical agency
Date Posted: 2014/05/12
khelifa reggas
by khelifa reggas , chercheur , canada

Probability sampling involves the selection of a sample from a population, based on the principle of randomization or chance. Probability sampling is more complex, more time-consuming and usually more costly than non-probability sampling. However, because units from the population are randomly selected and each unit's probability of inclusion can be calculated, reliable estimates can be produced along with estimates of the sampling error, and inferences can be made about the population.

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