A ______variable is one that is not controlled by the experimenter; if this variable has a differential impact on the different groups in the study then it is called a_____ variable.
A) confounding; extraneous
B) extraneous; confounding
C) independent; extraneous
D) independent; confounding

Question

Quizplus · Accepted Answer

An extraneous variable is one that is not controlled by the experimenter and can affect the results of an experiment. When an extraneous variable varies systematically with the independent variable and potentially influences the dependent variable, it becomes a confounding variable, making it difficult to establish a clear cause-and-effect relationship.

A ______Variable Is One That Is Not Controlled by the Experimenter;