Why Should We Not Include Irrelevant Variables in Our Regression

question 1

Multiple Choice

Why should we not include irrelevant variables in our regression analysis?

• A) Your R-squared will become too high
• B) Because of data limitations
• C) It is bad academic fashion not to base your variables on sound theory
• D) We increase the risk of producing false significant results

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Definitions:

Independent Variable

The factor in an experiment that the researcher alters or controls to see how it impacts the dependent variable.

Independent Variable

A variable in an experiment that is manipulated or changed by the researcher to observe its effects on the dependent variable.

Amount of Exercise

The volume or duration of physical activity that an individual engages in, typically measured in terms of frequency, intensity, and time.

Independent Variable

In an experiment, the variable that is manipulated or changed by the researcher to observe its effect on the dependent variable.