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Chapter 4: Q. 28 (page 239)

Nonresponse A survey of drivers began by randomly sampling from all listed residential

telephone numbers in the United States. Of 45,956 calls to these numbers, 5029 were

completed. The goal of the survey was to estimate how far people drive, on average, per

day. Describe how nonresponse might lead to bias in this study. Explain the likely

direction of the bias.

Short Answer

Expert verified

This nonresponse may lead to underestimation bias.

Step by step solution

01

Given information

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

02

Explanation

Nonresponse would very certainly lead to an underestimate bias because home telephone numbers were utilised. People who drive a lot are less likely to be able to complete the survey at home. People who drive a lot may also be too exhausted to pick up the phone.

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