Question
Identify the potential source of bias. Using random digit dialing, 1599 people were called and asked what obstacles ( such as childcare) kept them from
Identify the potential source of bias.
Using random digit dialing, 1599 people were called and asked what obstacles ( such as childcare) kept them from exercising
A not asking enough people
B using the word "obstacles"
C no source of bias
D Maybe they don't have children
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Introduction to graph theory
Authors: Douglas B. West
2nd edition
131437372, 978-0131437371
