At a DUI checkpoint, some cars are stopped at random; many others are not stopped. Using the terminology of psychological research, the cars that are stopped may be considered a __________ of all the cars that pass by the checkpoint.
A)sample
B)population
C)segment
D)subgroup

Question

Quizplus · Accepted Answer

The cars that are stopped at a DUI checkpoint represent a sample of the total number of cars passing through the checkpoint. In psychological research and statistics, a sample refers to a subset of individuals (or items) selected from a larger set (the population) for the purpose of investigation.

At a DUI Checkpoint, Some Cars Are Stopped at Random;