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5 July, 03:34

A researcher for a publisher randomly selects 85 of the nation's middle schools and interviews all of the teachers at each school. What sampling technique was used? Group of answer choices a) random b) stratified c) cluster d) convenience e) systematic.

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  1. 5 July, 06:44
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    Cluster sampling technique is used.

    Explanation:

    For the process of arriving at a conclusion from a large amount of data or a population or to study and analysis about a specific groups sampling is performed. There are many types of sampling it is always necessary to find the representative sample to avoid bias. In the given question the sampling technique which is involved is the cluster.

    In this type of sampling the samples are divided into separate groups called clusters and then they are analyzed individually. When there are clusters which are naturally occurring in the population this technique is used. This is not as clear as the other sampling techniques.
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