A local health department conducted a survey by calling household telephones in order to ask questions related to HIV/AIDS prevention and related behaviors .The survey, however, did not call cell phones and thus missed many younger people .This problem is called
A)Volunteer bias
B)Coverage bias
C)Sampling variability
D)Sampling error

Question

Quizplus · Accepted Answer

Coverage bias occurs when some members of the intended population are less likely to be included in the sample than others, as in this case where younger people, who are more likely to use cell phones exclusively, were missed because the survey only called household telephones.

A Local Health Department Conducted a Survey by Calling Household