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Designing a Survey

Upper Intermediate (B2) Campus life American Accent 63s

A student and his tutor discuss the questionnaire for his research project, including how many people to survey, how to avoid bias and which types of questions to use.

Vocabulary Highlights

bias /ˈbaɪəs/
An unfair influence that makes results or opinions lean one way instead of being balanced.
"Asking only your friends will introduce bias into the survey." — unbalanced results
"The judge was accused of bias toward the home team." — unfair preference
"We all have a bias toward information that supports what we already believe." — a natural tendency

Dialogue Transcript

Speaker 1: So, how's the questionnaire for your commuting project coming along?
Speaker 2: Pretty well, I think. I've drafted about twenty questions, but I'm not sure how many people I should survey.
Speaker 1: For a project this size, I'd aim for at least a hundred and fifty responses, so your results are actually meaningful.
Speaker 2: Okay. I was planning to just send it to people in my dorm, though.
Speaker 1: That's where you might run into problems with bias. Students in one building probably have very similar habits.
Speaker 2: Right, that makes sense. Maybe I could hand it out at the train station as well?
Speaker 1: Good thinking. And try to mix closed questions, like multiple choice, with a few open-ended ones.
Speaker 2: So I should avoid asking things like, don't you think driving is bad for the planet?
Speaker 1: Definitely. That's a leading question, and it pushes people toward a particular answer.
Speaker 2: Got it. I'll rewrite those and send you a revised version by Friday.

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