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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?


The buyers are chosen from people who make a lot of money.


The buyers must have purchased a new car recently.


The buyers are chosen in a random manner.


The buyers are able to drive the new cars before purchase.

All Answers 1

Answered by GPT-5 mini AI
The buyers are chosen in a random manner.

Random selection reduces selection bias and gives each potential buyer a known chance of being included, which is essential for a sample to be representative of the population.