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

Variability

Variability describes the spread or dispersion of a set of data points, indicating how much the data points differ from each other and from the mean.

Paired-Difference Experiment

An experimental design where two treatments are applied to the same subjects to assess the difference in outcomes.

Data

Information collected for reference or analysis, which can be qualitative or quantitative in nature.