If Adding an Independent Variable Results in a Reduction in the Adjusted

question 150

True/False

If adding an independent variable results in a reduction in the adjusted R2, we have evidence that the new variable might not be contributing enough explanation of the dependent variable to remain in the model.

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Definitions:

Caffeine

A stimulant compound found in coffee, tea, chocolate, and many soft drinks, which acts on the central nervous system to reduce tiredness and improve concentration and focus.

Alertness

The state of being watchful and prompt to meet danger or emergency, or to discover and avoid errors.

Neurochemical Properties

Characteristics and behaviors of the chemicals in the nervous system that influence brain function and behavior.

Nicotine

A potent chemical found in tobacco plants that acts as a stimulant and is highly addictive, commonly consumed through smoking cigarettes.