Refer to the Following Correlation Matrix That Was Part of a Regression

question 68

Multiple Choice

Refer to the following correlation matrix that was part of a regression analysis. The dependent variable was Abort (the number of abortions per 1000 women of childbearing age) . The regression was estimated using data for the 50 U.S. states with these predictors: EdSpend = public K-12 school expenditure per capita, Age = median age of population, Unmar = percent of total births by unmarried women, Infmor = infant mortality rate in deaths per 1000 live births. $$\begin{array}{l}\text { Correlation Matrix }\\\begin{array} { l c c c c c } \hline & \text { Abort } & \text { EdSpend } & \text { Age } & \text { Unmar } & \text { InfMor } \\\hline \text { Abort } & 1.0000 & & & & \\\text { EdSpend } & 0.2626 & 1.0000 & & & \\\text { Age } & 0.1610 & - 0.0420 & 1.0000 & & \\\text { Unmar } & 0.3286 & - 0.0949 & 0.0937 & 1.0000 & \\\text { InfMor } & - 0.2513 & - 0.2826 & 0.0389 & 0.5239 & 1.0000 \\\hline\end{array}\end{array}$$ Using a two-tailed correlation test, which statement is not accurate?

• A)Age and Infmor are not significantly correlated at ? = .05.
• B)Abort and Unmar are significantly correlated at ? = .05.
• C)Unmar and Infmor are significantly correlated at ? = .05.
• D)The first column of the table shows evidence of multicollinearity.

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Definitions:

Skeletal System

The framework of bones and cartilages in the body, providing support, protecting internal organs, and facilitating movement.

Mechanical Forces

Physical actions that result in stress or strain upon an object or material, including pulling, pushing, twisting, and compression, significant in physics and engineering.

Synovial Fluid

A viscous fluid found in the cavities of synovial joints, lubricating and nourishing the cartilage and bones within the joint.

Friction

The resistance that one surface or object encounters when moving over another.