Exam-Style Question on Statistics
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 260. This question is similar to one that appeared on a GCSE Higher paper (specimen) for 2017. The use of a calculator is allowed.
A survey is carried out by asking people questions as they come out of a coffee bar.
A section of the questionnaire is shown below.
(a) Explain why this is a biased survey.
(b) State two criticisms of the questions or the options given for answers.
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