The Editors of a National Automotive Magazine Recently Studied 30

question 46

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.Included in these were two variables described as follows: If these two variables are to be included in a regression model,how many additional variables will be needed?

• A)6
• B)2
• C)8

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Definitions:

Medical Statistician

A professional who applies statistical principles to medical and health-related fields, analyzing data relevant to public health, disease patterns, and medical treatment effectiveness.

Incidence Of Skin Cancer

The rate or number of new cases of skin cancer in a given population during a specified period.

Least Squares Regression

A method for estimating the best-fitting line through a set of points by minimizing the sum of the squares of the vertical deviations from each point to the line.

Simple Linear Regression

A numerical approach that establishes the link between a dependent variable and one independent variable through the application of a linear equation to the data observed.