Warby Parker wants to conduct a survey on consumers who wear glasses. It wants to give every person who wears glasses in the United States an equal chance of being chosen for the survey. First, though, it needs to separate those who wear glasses from those who do not. What type of sampling should Warby Parker use?

Question

Quizplus · Accepted Answer

Stratified sampling is the correct choice because it involves dividing the population into subgroups (strata) based on a specific characteristic—in this case, whether or not they wear glasses—and then taking a sample from each subgroup. This ensures that both groups (glasses wearers and non-wearers) are represented, and then the company can focus on the subgroup of interest (those who wear glasses) for its survey.

Warby Parker Wants to Conduct a Survey on Consumers Who