According to the text, variables, by definition,
A)cannot be measured.
B)can be changed or evaluated.
C)can involve random assignment.
D)can be constants.

Question

Quizplus · Accepted Answer

Variables are quantities or qualities that can be changed or evaluated in a study or experiment. This is their primary defining characteristic. The other options are either incorrect or incomplete. Variables can be measured or manipulated, involve non-random assignment, and are not constants (since they vary).

According to the Text, Variables, by Definition