Which of the following best describes a cluster sample of size 20 from a population of size 300?
A) Each of the 320 people is assigned a number. Twenty numbers are randomly selected by a computer and the people corresponding to these 20 numbers are the sample
B) The sample will consist of the first 20 people who volunteer to be part of the sample.
C) The 320 names are put into an alphabetical list and the list numbered from 1 to 320. A number between 1 and 304 (inclusive) is selected at random. The person corresponding to that number and the next 19 people on the list are selected for the sample.
D) The 320 names are put into an alphabetical list. One of the first 16 names on the list is selected at random as part of the sample. Every 16th name on the list is then selected for the sample.
E) All 320 names are written on slips of paper and the slips are put into a box. Twenty slips are selected at random from the box.
Answer: the 320 names are put into an alphabetical list and the list numbered from 1 to 320. a number between 1 and 304 (inclusive) is selected at random. the person corresponding to that number and the next 19 people on the list are selected for the sample
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