Question

Jillian wants to know what percent of students at her school watch sports on TV. Which strategy for sampling will be more likely to produce a representative sample?

Answer 1

At the next school assembly, ask every third student who enters whether or not they watch sports on TV

Explanation:

Students at a football game may like watching sports more than students who don't go to football games.

If Jillian wants to know about the students at her school, she should sample in a way that gives every student at her school an equal chance of being in the sample.

The answer for a more representative sample:

At the next school assembly, ask every third student who enters whether or not they watch sports on TV.