Use Computer Software to Find the Multiple Regression Equation A) WEIGHT =196+2

question 36

Multiple Choice

Use computer software to find the multiple regression equation. Can the equation be used for prediction? 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) WEIGHT =196+2.35 CHEST +3.40 LENGTH +25 SEX; Yes, because the R2 is high.
• B) WEIGHT =-320+10.6 CHEST +7.3 LENGTH -10.7SEX ; Yes, because the P -value is high.
• C) WEIGHT =-442.6+12.1 CHES +3.6 LENGTH -23.8SEX ; Yes, because the adjusted R2 is high.
• D) WEIGHT =442.6+12.1 CHEST +4.2 LENGTH-21SEX ; Yes, because the P -value is low.

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Definitions:

Myelin

Myelin is a fatty substance that forms a sheath around the axons of many neurons, speeding up the transmission of electrical signals in the nervous system.

Insulates

To cover, line, or separate with a material that stops or slows down heat, electricity, or sound from passing through.

Neuron

A nerve cell that is the building block of the nervous system, responsible for receiving, processing, and transmitting information through electrical and chemical signals.

Attention-Deficit/Hyperactivity Disorder

A neurological disorder characterized by a pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development.