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12 January, 07:09

To study the mean blood pressure of all people in her state, Christine samples the population by dividing the residents by towns and randomly selecting 9 of the towns. She then collects data from all the residents in the selected towns. Which type of sampling is used?

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  1. 12 January, 07:35
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    Answer: cluster sampling

    Step-by-step explanation:

    A cluster sampling technique is a kind of random sampling technique in statistics, where the researcher splits the entire population into a finite number of distinct classes called as clusters. The he randomly select a sample of clusters from them such that all the participant of the cluster are involved in the study.

    Given : Christine samples the population by splitting the residents by towns and randomly selecting 9 of the towns.

    Since she collects data from all the residents in the selected towns.

    That means, towns are the clusters.

    Hence, the type of sampling is used : "cluster sampling"
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