Variables are extraneous if their effects on the response variable cannot bedistinguished from one another.

Name: Variables are extraneous if their effects on the response variable cannot bedistinguished from one another.
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Extraneous variables are those that are not of interest in the study but can affect the outcome. Confounding variables are the ones whose effects on the response variable cannot be distinguished from other variables.

Variables Are Extraneous If Their Effects on the Response Variable