Question

question 10 of 10
suppose that a defined population is all men who are 50 or younger, and a
survey is being conducted. which of these is an example of selection bias?

a. including men under 30 in the selection process of the survey

b. excluding men under 30 from the selection process of the survey

c. excluding men over 50 from the selection process of the survey

Explanation:

Selection bias occurs when a sample does not accurately represent the entire defined population. The population here is all men 50 or younger. Excluding a subgroup (men under 30) that is part of this population creates a biased sample that does not reflect the full population. Options A and C are either inclusive of the population or exclude those outside the defined population, which is appropriate.

Answer:

B. Excluding men under 30 from the selection process of the survey