The Editors of a National Automotive Magazine Recently Studied 30

question 127

Multiple Choice

The editors of a national automotive magazine recently studied 30 different automobiles sold in the United States with the intent of seeing whether they could develop a multiple regression model to explain the variation in highway miles per gallon.A number of different independent variables were collected.The following regression output is the result of using a forward selection stepwise regression approach. Based on the regression output,which of the following statements is true?

• A)There is a multicollinearity problem since the standard error of the estimate actually increased when the second variable,"Price as Tested," entered the model.
• B)The R-square value increased when the second variable entered the model.
• C)Neither variable in the model is statistically significant at the alpha = 0.05 level.
• D)The reason that only two variables entered the model is due to the small sample size used in this study.

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Definitions:

Cell Signaling

A complex system of communication that governs basic cellular activities and coordinates cell actions to ensure the survival, growth, and maintenance of living organisms.

Intercellular Junctions

Points of contact that connect the plasma membranes of tissue cells, facilitating communication and barrier functions.

Animal Cells

Basic structural and functional units of animals, characterized by a nucleus and other organelles all enclosed by a cell membrane.

Intraoffice Area Network

A network that connects computers and devices within the same office or building, facilitating internal communication and resource sharing.