You want to test people's cola preferences.So,you conduct a taste test using two different brands of cola.However,you are worried about possible clues you may give people taking the
Test.So,you label the two colas and have your assistant,who does not know which cola is
Which,to administer the test to the subjects.Thus,you have prevented yourself and your
Assistant from giving out any clues by using
A) random selection.
B) random assignment.
C) a single-blind experiment.
D) a double-blind experiment.

Question

Quizplus · Accepted Answer

By labeling the colas and having the assistant administer the test without knowing which cola is which, the experiment is designed to minimize bias and prevent clues that could potentially skew the results. This is a classic example of a double-blind experiment, where both the researcher and the assistant are blinded to the treatment group.

You Want to Test People's Cola Preferences