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:

Confidence Interval

A range of values that is likely to contain a population parameter with a certain level of confidence.

Null Hypothesis

A default hypothesis that there is no effect or no difference, and the observed outcomes are due to chance; it is the hypothesis tested for possible rejection in statistical analysis.

Hypothesized Value

A specified value in hypothesis testing which is assumed for the sake of argument or investigation.

One-Tail Test

A statistical hypothesis test in which the region of rejection is on only one side of the sampling distribution.