Which characteristic is necessary for an extraneous variable to become a confounding variable?
A) It must change systematically from one participant to the next.
B) It must change systematically when the independent variable is changed.
C) It must have no systematic relationship with the dependent variable.
D) It must have no systematic relationship to the independent or dependent variables.

Question

Quizplus · Accepted Answer

For an extraneous variable to become a confounding variable, it must change systematically when the independent variable is changed. In other words, it must be related to the treatment or intervention being applied in the study. This relationship between the extraneous variable and the independent variable can cause confusion when trying to determine the true effect of the independent variable on the dependent variable, hence confounding the results.

Which Characteristic Is Necessary for an Extraneous Variable to Become