A control variable is
A) under the control of the subject.
B) a potential independent variable that is held constant in an experiment.
C) a potential independent variable that is manipulated by the experimenter.
D) expected to change as the result of an experimental manipulation.

Question

Quizplus · Accepted Answer

A control variable is a variable that is held constant or whose impact is removed in order to clearly isolate the relationship between an independent variable and a dependent variable. This ensures that any observed effects can be attributed to the manipulation of the independent variable rather than variations in the control variable.

A Control Variable Is