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Volunteering

APSTAT-YVVQTW

A local church wants to know how often people of the community volunteer. Pastors of the church visited $100$ randomly selected houses during the day and asked respondents approximately how many hours per month they perform volunteer work.

Which of the following bias(es) could be present in this study?

I. Undercoverage
II. Nonresponse
III. Response bias

A

I only.

B

II only.

C

I and II only.

D

II and III only.

E

I, II, and III.