A researcher is studying the prevalence of chronic fatigue syndrome using a long questionnaire.The researcher is worried that people with chronic fatigue syndrome will be less likely to complete the questionnaire than healthy people.If this is true the study will
A)estimate the prevalence perfectly
B)overestimate the prevalence
C)underestimate the prevalence
D)none of the above

Question

Quizplus · Accepted Answer

If people with chronic fatigue syndrome are less likely to complete the questionnaire, their responses will be underrepresented in the study. This will lead to an underestimation of the prevalence of chronic fatigue syndrome in the population being studied.

A Researcher Is Studying the Prevalence of Chronic Fatigue Syndrome