Which of the following yields a cluster sample?
A) All students in a class are divided into groups of 15. One student is randomly chosen from the first group, the remaining observations are every 15th student thereafter.
B) The best 15 students, according to the opinion of the instructor, in a class are selected.
C) All students in a class are grouped according to their gender. A random sample of 8 is selected from the males and a separate random sample of 7 is selected from the females.
D) All students in a class are divided into groups according to the rows in which they are seated. One of the groups is randomly selected.

Question

Quizplus · Accepted Answer

Option D yields a cluster sample as the students are grouped (clustered) according to their rows and one of the groups is randomly selected. The other options do not involve any clustering of the population. Option A is a systematic random sample, option B is a judgement sample, and option C is a stratified random sample.

Which of the Following Yields a Cluster Sample