Asq Certified Quality Auditor CQA · Free Practice Question Easy
Question 9
Which of the following is an example of a probability sample?
- A A researcher surveys students at a university by selecting a sample of students from specific majors that are of interest to the researcher
- B A researcher surveys students at a university by asking them to volunteer to participate in the study
- C A researcher surveys students at a university by selecting a random sample of students from the student directory
- D A researcher surveys students at a university by selecting the first 500 students from the student directory
Reveal correct answer
Correct answer: C
Explanation
A probability sample is a sample that is selected in such a way that each member of the population has an equal chance of being included in the sample. In this example, selecting a random sample of students from the student directory would be an example of a probability sample, as each student has an equal chance of being selected.Discussion
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