Question

a market research company wants to collect opinions on the comfort and performance of a new type of sneaker by brand x. which group of individuals would be the best choice for a random sample?

• ask every fourth person on the street
• ask every fourth person who is wearing that brand of sneaker
• ask every fourth employee from the brand x flagship store
• ask every fourth person who is wearing shoes

Explanation:

To get unbiased opinions on Brand X sneakers' comfort/performance, a random sample should be representative. Asking every fourth person on the street (first option) is random and includes a diverse group, not limited to sneaker - wearers or employees. The second option (only those in Brand X sneakers) is biased as it targets users already using the brand. The third (Brand X employees) is biased as they may have a vested interest. The fourth (only those in shoes) is also biased, excluding those in other footwear. So the first option is the best random sample.

Answer:

A. ask every fourth person on the street