One reason for performing a paired-difference experiment is to:
A) reduce the degrees of freedom
B) allow one to use a larger value of
C) reduce the quantity of information in the experiment
D) reduce the variability in the sample data
E) do none of these

Question

Quizplus · Accepted Answer

A paired-difference experiment is designed to reduce the variability in the sample data by controlling for variables that could influence the outcome, thus making it easier to detect any true differences or effects due to the treatment or condition being tested.

One Reason for Performing a Paired-Difference Experiment Is To