A sociologist studying freshmen at a major university carried out a survey, asking (among other questions) how often students went out per week, how many hours they studied per day, and how many hours they slept at night. The sociologist used an introductory sociology class to carry out the survey, instructing the students to participate only if they were freshmen. The sample consists of:
A)the students enrolled in the class.
B)the students who were in class for the survey and answered the survey questions.
C)the freshmen at the university.
D)the freshmen in the class who answered the survey questions.

Question

Quizplus · Accepted Answer

The sample consists only of the freshmen in the class who answered the survey questions, as instructed by the sociologist. The other options (A, B, C) are either too broad (A and C) or include non-freshman students who did not participate in the survey (B). Therefore, D is the best choice.

A Sociologist Studying Freshmen at a Major University Carried Out