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:

Afar Region

A region in the Horn of Africa, known for its volcanic activity and being part of the Afar Triple Junction where three tectonic plates meet.

Continental Hot Spot

A region above a stationary hot mantle plume that can cause volcanic activity in the middle of a tectonic plate.

Meteorite Impact

The collision of a meteorite with another body, such as a planet or moon, often leaving a crater and causing significant geological effects.

Foreland Basin

A structural basin that forms adjacent to mountain ranges, created by the Earth's crust flexing due to the weight of the overlying mountains.