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What is a confounding​ variable?

A. A confounding variable is a response variable that was not considered in a study whose effect cannot be distinguished from a second explanatory variable in the study.
B. A confounding variable is an explanatory variable that was considered in a study whose effect cannot be distinguished from a second explanatory variable in the study.
C. A confounding variable is a response variable that has an effect on the explanatory​ variable, but it cannot be accurately measured in the study.
D. A confounding variable is the explanatory variable on which a study has been focused.

Respuesta :

Answer: Option (B) is correct.

Explanation:

In an experiment, there are three types of variables, namely, Dependent variable, Independent variable or explanatory variable and confounding variable. We know that explanatory variable have some effects on dependent variable but confounding variable also affect dependent variable in some way. But confounding variables are having the hidden effect on the main variable.

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