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Chapter 1: Q3-18BSC (page 1)

In Exercises 9鈥�20, identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.

Exit Polls During the last presidential election, CNN conducted an exit poll in which specific polling stations were randomly selected and all voters were surveyed as they left the premises.

Short Answer

Expert verified

Cluster sampling

Step by step solution

01

Given information

The exit poll conducted by CNN selected few polling stations randomly and then surveyed all the voters in those stations.

02

Identify the method of sampling

In cluster sampling, few random groups are selected from the population (divided into multiple groups). Each of the elements from the selected groups is studied for the survey.

In the survey, the population of voters was divided as per the polling stations. Each polling station is a cluster, of which few were randomly chosen. The voters (subjects of the study) were recorded for responses from the chosen polling station.

Thus, the sampling method is cluster sampling.

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