Cluster and Multistage Sampling

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In: Introduction to Survey Sampling

Little Green Book
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Cluster and Multistage Sampling

In most sampling problems the population can be regarded as being composed of a set of groups of elements. One sampling use for such groups is to treat them as strata, as discussed in the previous section. In this case, separate samples are selected from each group. Another sampling use is to treat them as clusters, in which case only a sample of them is included in the survey. If all the elements in selected clusters are included in the sample, the method is known as cluster sampling. If only a sample of elements is taken from each selected cluster, the method is known as two-stage sampling. Often a hierarchy of clusters is used: First some large clusters are selected, next some ...

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