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Chapter 4: Q. 25 (page 239)

Eating on campus The director of student life at a small college wants to know what

percent of students eat regularly in the cafeteria. To find out, the director selects an SRS of

300 students who live in the dorms. Describe how undercoverage might lead to bias in this

study. Explain the likely direction of the bias.

Short Answer

Expert verified

It is an example of undercoverage because students who do not live in the dorms cannot be a part of sample and it is more likely to shift towards higher percentage side.

Step by step solution

01

Given information

We need to describe how undercoverage might lead to bias in this study.

02

Explanation

It is an example of undercoverage because students who do not live in the dorms cannot be a part of sample. Some students may live off campus and be less likely to eat in cafeteria so the estimate that the director get is more likely to be higher than if the question is asked to the all students.

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