You are surveying students to find out their opinion of the quality of food served in the school cafeteria. You decide to poll only those students who buy hot lunch at the school cafeteria on a particular day. Is your sample random?

Question

crashonce · Answer

it depends, polling students who buy hot lunch may affect your result, simply because, what about those who buy drinks, or the snacks  or the cold foods?

crashonce · Answer

therefore, it isnt exactly random

kyanthedoodle · Answer

Thanks man.

crashonce · Answer

nws