What does it mean if the results of a survey are representative of a group? If I survey all the people 12 and under at the gym about their favorite food, how do I know if my results represent the group I want to study?

Question

a1234 · Answer

@Hero

amistre64 · Answer

well, if the group you want to study is NOT people 12 and under .... say you wanted to study the effects of 32 year olds watching spongebob at the video arcade; a survey of people 12 and under at the gym might not be representative of your target group.

a1234 · Answer

So in the case I gave above, the results are representative of my group, right?