Any time a variable has been controlled, it has presumed to be
A) held constant.
B) administered only to the control group.
C) administered only to the experimental group.
D) all of these, depending on the experimental design.

Question

Quizplus · Accepted Answer

When a variable is controlled, it means that it is being held constant or fixed at one value throughout the experiment. This applies to all types of experimental designs, whether there is a control or experimental group or not. Therefore, the correct choice is A) held constant.

Any Time a Variable Has Been Controlled, It Has Presumed