Determining Which Variables to Include in Regression Analysis by Estimating

question 20

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:

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

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Definitions:

Non-Directional

Pertaining to a hypothesis that does not specify the direction of the expected relationship between variables, only that one exists.

Sample Size

The number of observations or units in a subset of a population used in statistical analysis.

Correlational Research

A type of non-experimental research method used to determine, describe, and predict how variables are naturally related in the real world without any experimental manipulation by the researcher.

Two-Tailed

Pertaining to tests of statistical significance that consider both directions of effects, allowing for the assessment of the possibility of both positive and negative differences.