Question

An advertising agency wants to survey potential buyers of new cars in the U.S. Which of the following is MOST important when selecting a representative sample of buyers?

A. The buyers are chosen in a random manner.
B. The buyers are chosen from people who make a lot of money.
C. The buyers must have purchased a new car recently.
D. The buyers are able to drive the new cars before purchase

Answer 1

The most reasonable answer above is A in order to get the most accurate results. If you base your answer on how much money they have or if they have already bought a new car your results will not be very accurate.