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Cluster sampling examples. Example 1: Assume that a study with relatively large square fixed area plots of 50 m x 50 m had been carried out, on which all tree positions were mapped. Because the individual plots were relatively large, there were only resources available to measure \(n=10\) sample plots.
Answer Wiki. In cluster sampling we select a sample of clusters, not all clusters. We might then subsample the clusters and subsample the subsamples of clusters. Such samples are multi-stage cluster samples. Cluster sampling is less accuratefor the same sample size but allows a larger sampe for the same cost. In stratified sampling we sample from every stratum. This is more precises than a simple random sample for the same sample size.