You can't ask everyone!

Suppose you need to find out what everyone thinks. It's easy if 'everyone' is just a small group of friends. But if you need to find out what a much larger group of people think, it's often impossible to ask everyone. So what should you do? Should you ask some people but not others? If so, how do you decide who you should ask?

In this unit you'll learn about research methods for finding out what people think, when you can't ask everyone!