In an experiment, a researcher believes that by manipulating Variable A he can cause changes in Variable B.However, Variable C is actually causing changes in Variable B.Variable C is a(n) ____ variable.
A) independent
B) dependent
C) extraneous
D) attribute

Question

Quizplus · Accepted Answer

Variable C is an extraneous variable because it is not being manipulated by the researcher, but it is still having an effect on Variable B, which could confuse or confound the results of the study. Independent variables are the ones being manipulated, dependent variables are the ones being measured, and attribute variables are characteristics of the participants or objects being studied.

In an Experiment, a Researcher Believes That by Manipulating Variable