3
QuizMultiple Choice

Other Sampling Methods — Quiz

Question 3 • Statistics and Probability

A paper company wants to survey its employees about a new policy on sales commissions. Which of the following would result in a stratified random sample?

Answer
A
Put everyone’s name on a slip of paper and randomly pull out 10 names.
B
Using an alphabetized list of employees, randomly select a starting point and survey every 4th person after that.
C
Give a survey to everyone who was eating lunch in the break room that day.
D
Randomly select 2 people from each department (sales, customer service, accounting, etc.)

Explanation

A stratified random sample divides the population into groups, called strata, and randomly samples from each group. Choice D separates employees by department and randomly selects two people from every department, so each department is represented. Choice A is a simple random sample, while B is a systematic sample and C is a convenience sample.

AI-written and checked against the verified answer.

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