A consultant planning a survey of elementary school principals in a particular s
ID: 3055947 • Letter: A
Question
A consultant planning a survey of elementary school principals in a particular state has lists of the elementary school principals employed in each of the 95 school districts. The procedure will be to obtain a random sample of elementary school principals from each of the districts rather than grouping all the lists together and obtaining a sample from the entire group.
Which of the following statements is true?
A) This is a simple random sample achieved in an easier and less expensive manner than procedures involving sampling from the whole population of principals.
B) This is a stratified sample, which may yield comparative information that a simple random sample couldn’t give.
C) This is an example of systematic sampling, which can achieve a reasonable sample as long as the original order of the list is not related to the variables under consideration.
D) This is an example of proportional sampling based on the actual sizes of the school districts in the total population.
E) This is a cluster sample in which the entire population was divided into heterogeneous groups called clusters.
Explanation / Answer
This is a stratified sample, which may yield comparative information that a simple random sample couldn’t give.
Option B is correct.
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