A sociologist studying freshmen at a major university carried out a survey, aski

Question

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, who would like a simple random sample but finds it too time?consuming to obtain such a sample, decides to use all students enrolled in his own class. This type of sample:

A) is a convenience sample.

B) likely results in undercoverage of certain types of freshmen.

C) could lead to biased conclusions.

D) All of the answer options are correct.

Explanation / Answer

D is correct option.

As , the sociologist studies only his own class students to make conclusions , he is indeed using a convenience sample.

Using a convenience sample is always subject to bias ans leads to undercoverage of variety of observations and thereby decreases the precision of sample .

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