Which of the following samples would represent a biased sample if a population comprised 40% freshmen,30% sophomores,15% juniors,and 15% seniors?
A)200 of each class year (a total sample of 800 students)
B)80 freshmen,60 sophomores,30 juniors,30 seniors
C)40 freshmen,30 sophomores,15 juniors,15 seniors
D)8 freshmen,6 sophomores,3 juniors,3 seniors

Question

Quizplus · Accepted Answer

The sample in choice A is biased because it does not reflect the population's distribution. It gives equal representation to each class year, whereas the population has different proportions for each class year.

Which of the Following Samples Would Represent a Biased Sample