Question

Michael is taking a survey of students at his high school to find out how many hours they work per week. He surveys all of the students in his Freshman English class. Is this a good sampling method?

Answer 1

No, he should have surveyed students in his PE class since all grades are represented in that class.

Answer 2

No, he should have taken a random sample of all students at the school to get a good sample of the entire population of the school.