Which of the following situations is a cluster sample?
a. survey five friends concerning their opinions of a local hockey team
b. from a list of all students in your school, randomly select 20 to answer a survey about internet use
c. identify four ethnic groups at your school. From each group, choose enough respondents so that the final sample contains roughly the same proportion of each group as the school population
d. take a random sample of five voting precincts in a large metropolitan area and do an exit poll at each voting site
e. measure the length of time each fifth person entering a restaurant has to wait to be seated
Answer: take a random sample of five voting precincts in a large metropolitan area and do an exit poll at each voting site
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.