The owner of a dance academy wants to know how many students would be interested in learning a rare tribal dance. which sampling method will result in a sample that is not biased?
a. the owner questions students he personally knows because he thinks that they will speak honestly to him.

b. the owner puts questionnaires in the changing rooms for students to fill out and drop into a secure box.

c. the owner talks to every third student entering a ballet class that is about to start.

d. the owner lists the names of all the students and calls every fifth student

b. The owner puts questionnaires in the changing rooms for students to fill out and drop into a secure box.

Explanation:

Option B is the one least likely to be biased. In this example, the owner wants to obtain information that is as objective as possible. Option A is not a good option because people who know the owner are most likely to want to please him with their answers. Option C is similarly biased because all of the students belong to the same class. Option D is not a good option because privacy is not maintained. The best option is option C.

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