Question

A radio station asks its listeners to call in their opinion regarding the closing of fire stations in the city. Identify the sampling method used, and explain why this sample could be biased.

Answer 1

Convenience sampling is the method used.

It limits population to listeners of that radio station at only a particular time.

People that call in probably have a strong opinion for or against the closings.

Answer 2

Sample response:

A convenience sample is used. The sample could be biased because it limits the population to listeners of that radio station at a certain time. Callers may be more likely to have a strong opinion on the issue.