Determining Which Variables to Include in Regression Analysis by Estimating

question 16

Multiple Choice

Determining which variables to include in regression analysis by estimating a series of regression equations by successively adding or deleting variables according to prescribed rules is referred to as _____ regression.

• A)elimination
• B)forward
• C)backward
• D)stepwise

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Definitions:

Biological Rhythms

Natural cycles of change in bodily functions or activities, such as the circadian rhythm that governs sleep-wake cycles.

Cocaine

A powerful stimulant drug derived from the leaves of the coca plant, which can cause intense euphoria but also significant physical and psychological harm.

Coca Plant

A plant native to South America, known scientifically as Erythroxylum coca, from which cocaine is derived.

Activation-Synthesis Theory

A theory of dreaming that proposes dreams are the result of the brain's attempt to make sense of neural activity that occurs during sleep.