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Chapter 4: Q. 31 (page 239)

Boys don鈥檛 cry? Two female statistics students asked a random sample of 60 high school

boys if they have ever cried during a movie. Thirty of the boys were asked directly and the

other 30 were asked anonymously by means of a 鈥渟ecret ballot.鈥� When the responses were

anonymous, 63% of the boys said 鈥淵es,鈥� whereas only 23% of the other group said 鈥淵es.鈥�

Explain why the two percentages are so different.

Short Answer

Expert verified

The two percentages are so different because boys feel embarrassed if they admit that they do cry.

Step by step solution

01

Given information

We need to explain that why the two percentages are so different.

02

Explanation

When asked in personal boys may claim that they don't cry because they feel embarrassed if they agreed to do so. This affect the result of survey.

When given an anonymous survey, boys are more likely to get true responses.

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Most popular questions from this chapter

Improving response rate -How can we reduce the rate of refusals in telephone surveys? Most people who answer at all listen to the interviewer鈥檚 introductory remarks and then decide whether to continue. One study made telephone calls to randomly selected households to ask opinions about the next election. In some calls, the interviewer gave her name; in others, she identified the university she was representing; and in still others, she identified both herself and the university. For each type of call, the interviewer either did or did not offer to send a copy of the final survey results to the person interviewed.

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