Question

1

A. Explain why cluster sample is a probability sample design?

B. What are the advantages and disadvantages of cluster sampling?

C. Describe a situation where you would use cluster sampling.

Answer 1

A)in cluster analysis,researcher divides the population into separate groups, called clusters. Then, a simple random sample of clusters is selected from the population. So cluster sample is a probability sample design.

B) advantages of cluster sampling

#very useful when population is large

#economically efficient

Disadvantages of cluster sampling

#standard error of the estimate is likely to be large

#representation is likely to become an issue

C)

cluster sampling is used when researcher can't get information about the population as a whole but they can get information about the clusters. For example

If researcher want to survey academic performance of high school students then he can divide the total reason into clusters.

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