One characteristic of "paired variables" is that
A)one variable is a negative value and the other is a positive value.
B)both variables are positive values.
C)each variable has the same number of observations.
D)each variable has a different number of observations.

Question

Quizplus · Accepted Answer

Paired variables imply that for each observation in one variable, there is a corresponding observation in the other variable, meaning they have the same number of observations. This is often used in paired tests or studies where each pair of data points is related in some way, such as measurements before and after a treatment on the same subjects.

One Characteristic of "Paired Variables" Is That