Question

for example, here is a summary of an article about a report published in a fast-food research journal:

bobs burgers is clearly the most preferred brand of hamburgers among fast-food restaurants. in a survey of more than 5000 people, 90% of respondents claimed to prefer a hamburger from bobs burgers over a hamburger from any other fast-food chain. respondents were chosen from individuals who were visiting bobs burgers fan club website and volunteered to take the survey.

what do you think of this study, based on the summary?

in 25 words or fewer, describe the parts of this study that might be problematic.

submit

Explanation:

The sample is biased: respondents are self-selected Bob's Burgers fans, so results don't reflect general fast-food preferences.

Answer:

The study uses a biased, self-selected sample of Bob's Burgers fans, skewing results.