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)subset
C)cohort
D)population

Question

Quizplus · Accepted Answer

In psychological research, a sample is a subset of the population that is studied. In this scenario, the cars that are stopped at the DUI checkpoint represent a sample of all the cars that pass by the checkpoint. Therefore, the best choice is A) sample. Subset could also be a possible answer, but it is not as commonly used in psychological research. A cohort refers to a group of people who share a common characteristic, which does not fit the scenario. Population refers to the entire group of interest in the research, which in this case would be all the cars passing by the checkpoint, not just the ones stopped.

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