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With a census, a population is broken up into different subgroups and then simple random samples are conducted within each of these subgroups

User Nathancy
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Answer:

This is called cluster sampling.

Cluster sampling is a sampling techniques majorly used for market survey.where you have a homogeneous population that are internally heterogeneous, it is divided into subgroups and simple random sampling is conducted on it.

User Vlad Gudim
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