A librarian wants to gather data on the number of times books of fiction are checked out during the year. The library has 2000 books of fiction, of which 500 are murder mysteries, 400 are science fiction, and the rest are "other". She decides to sample 120 books. Suppose the librarian takes the next 120 fiction books that are turned in and calculates the average number of times these books were checked out in the last year. What sampling technique was used?
A) Self-selected sample
B) Volunteer sample
C) Convenience sample
D) Random sample

Question

Quizplus · Accepted Answer

The librarian used a convenience sample because she chose the next 120 fiction books that were turned in, which is a method based on ease of access rather than random selection.

A Librarian Wants to Gather Data on the Number of Times