From the standpoint of statistical efficiency,cluster samples are generally less efficient than other types of probability samples.

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Cluster samples are generally less efficient than other types of probability samples because they involve sampling at two stages, first selecting clusters and then selecting individuals within those clusters. This results in greater variability within clusters and lower precision compared to other sampling designs such as simple random sampling or stratified random sampling. However, cluster sampling may be more cost-effective and logistically feasible in certain situations, such as when studying populations that are geographically dispersed or difficult to reach.

From the Standpoint of Statistical Efficiency,cluster Samples Are Generally Less