What are confounding variables, and what problems can they cause? What are confo

Question

What are confounding variables, and what problems can they cause? What are confounding variables?

A. Items or quantities that the study seeks to measure

B. Items or quantities that can vary or take on different values

C. Items or quantities that are not intended to be part of the study

D. Items or quantities that can affect sample selection What problems can confounding variables cause?

Select all that apply.

A. They can cause the study to favor certain results unexpectedly.

B. They can prevent the sample from being representative of the population.

C. They can cause incorrect conclusions to be drawn from the study.

D. They can make a study seem unnecessarily complex.

Explanation / Answer

A confounding variable is an “extra” variable that you didn’t account for. They can ruin an experiment and give you useless results. They can suggest there is correlation when in fact there isn’t. They can even introduce bias. That’s why it’s important to know what one is, and how to avoid getting them into your experiment in the first place.

Confounding variables can cause two major problems:

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