Cluster sampling is generally used in surveys that involve field interviews and is most useful in studies that involve widely dispersed subjects.

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Quizplus · Accepted Answer

Cluster sampling is indeed often used in surveys involving field interviews, especially when subjects are geographically dispersed. It allows researchers to divide the population into clusters (usually based on geographic location) and then randomly select clusters for study, making the survey process more manageable and cost-effective.

Cluster Sampling Is Generally Used in Surveys That Involve Field