Use Computer Software to Obtain the Multiple Regression Equation and Identify

question 159

Multiple Choice

Use computer software to obtain the multiple regression equation and identify R $$\mathrm { R } ^ { 2 }$$ , adjusted R $$\mathrm { R } ^ { 2 }$$ , and the P-value.
-A wildlife analyst gathered the data in the table to develop an equation to predict the weights of bears. He used WEIGHT as the dependent variable and CHEST, LENGTH, and SEX as the independent variables. For SEX, he
Used male=1 and female=2. $$\begin{array} { | c c c c | } \hline \text { WEIGHT } & \text { CHEST } & \text { LENGTH } & \text { SEX } \\\hline 344 & 45.0 & 67.5 & 1 \\416 & 54.0 & 72.0 & 1 \\220 & 41.0 & 70.0 & 2 \\360 & 49.0 & 68.5 & 1 \\332 & 44.0 & 73.0 & 1 \\140 & 32.0 & 63.0 & 2 \\436 & 48.0 & 72.0 & 1 \\132 & 33.0 & 61.0 & 2 \\356 & 48.0 & 64.0 & 2 \\150 & 35.0 & 59.0 & 1 \\202 & 40.0 & 63.0 & 2 \\365 & 50.0 & 70.5 & 1 \\\hline\end{array}$$

• A) 0.971, 0.723, 0.000
• B) 0.891, 0.926, 0.003
• C) 0.725, 0.961, 0.014
• D) 0.927, 0.900, 0.000

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Definitions:

Perfectly Elastic

Describing a situation where the quantity demanded or supplied responds infinitely or by an unlimited amount to a change in price.

Horizontal Line

A straight line on a graph that runs parallel to the x-axis, indicating a constant value.

Price Elasticity

A measure of how much the quantity demanded of a good responds to a change in its price, indicating the sensitivity of consumers to price changes.

Perfectly Elastic

Describes a situation in economics where the quantity demanded or supplied responds infinitely or extremely to a change in price.