Why Are Extraneous Variables Problematic

question 19

Multiple Choice

Why are extraneous variables problematic?

• A) The operational definitions of extraneous variables are poor.
• B) The extraneous variables are purposely manipulated by the researcher.
• C) Extraneous variables are usually measured on a Likert scale.
• D) The researcher does not know if the results are due to the independent variable or to the extraneous variables.

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