15. A survey was sent out by mail to collect information concerning support of the local school levy. Of the 2000 surveys mailed out, only 400 were returned. This is an example of a potential:

A. response bias
B. nonresponse bias
C. selection bias



Answer :

Final answer:

Nonresponse bias occurs when there is a difference between survey responders and non-responders, impacting result accuracy.


Explanation:

Nonresponse bias occurs when there is a significant difference between the people who respond to a survey and those who do not, affecting the accuracy of the results. In the given example, out of 2000 surveys mailed, only 400 were returned, potentially leading to nonresponse bias.


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