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a. Describe why the Literary Digest poll of 1936 has
become infamous.
b. What caused this poll to be so wrong?
5.8 a. What is meant by self-selected sample?
b. Give an example of a recent poll that involved a
self-selected sample.
c. Why are self-selected samples not desirable?
5.9 A regular feature in a newspaper asks readers to
respond via e-mail to a survey that requires a yes
or no response. In the following day’s newspaper,
the percentage of yes and no responses are
reported. Discuss why we should ignore these
statistics.
5.10 Suppose your statistics professor distributes a
questionnaire about the course. One of the questions
asks, “Would you recommend this course
to a friend?” Can the professor use the results
to infer something about all statistics courses?
Explain.
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