Because 25 percent of the students in my morning statistics class watch eight or more hours of television a week,I conclude that 25 percent of all students at the university watch eight or more hours of television a week.The most important logical weakness of this conclusion would be
A)relying on a sample instead of surveying every student.
B)using a sample that may not be representative of all students.
C)failing to correct for unconscious interviewer bias.
D)assuming cause and effect where none exists.

Question

Quizplus · Accepted Answer

The conclusion is based on the assumption that the sample of students in the morning statistics class is representative of all students at the university, which may not be true. Therefore, using a sample that may not be representative of all students is the most important logical weakness of this conclusion.

Because 25 Percent of the Students in My Morning Statistics