Use Computer Software to Find the Regression Equation A) WEIGHT $= - 320 + 10.6$

question 128

Multiple Choice

Use computer software to find the 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. $\begin{array}{cccc}\hline \text { WEIGHT } & \text { CHEST } & \text { LENGTH } & \text { SEX } \\\hline 344 & 45.0 & 67.5 & 1 \\416 & 54.0 & 72.0 & 1 \\220 & 41.0 & 70.0 & 2 \\360 & 49.0 & 68.5 & 1 \\332 & 44.0 & 73.0 & 1 \\140 & 32.0 & 63.0 & 2 \\436 & 48.0 & 72.0 & 1 \\132 & 33.0 & 61.0 & 2 \\356 & 48.0 & 64.0 & 2 \\150 & 35.0 & 59.0 & 1 \\202 & 40.0 & 63.0 & 2 \\365 & 50.0 & 70.5 & 1 \\\hline\end{array}$

• A) WEIGHT \(= - 320 + 10.6\) CHEST + 7.3LENGTH - 10.7SEX; Yes, because the \(\mathrm { P }\)-value is high
• B) WEIGHT \(= - 442.6 + 12.1\) CHEST + 3.6LENGTH \(- 23.8\) SEX; Yes, because the adjusted \(R ^ { 2 }\) is high
• C) WEIGHT \(= 442.6 + 12.1\) CHEST \(+ 4.2\) LENGTH \(- 21 S E X ;\) Yes, because the P-value is low
• D) WEIGHT \(= 196 + 2.35\) CHEST \(+ 3.40\) LENGTH \(+ 25\) SEX; Yes, because the \(\mathrm { R } ^ { 2 }\) is high

Analyze changes in labor force dynamics and their potential impact on broader economic indicators.

Understand the basis and development of cognitive and behavior therapies.

Recognize the assumptions and challenges of behavior therapies.

Identify treatments and their effectiveness for specific disorders.

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Definitions:

Preferential Looking

A research method used in developmental psychology to understand the preferences of infants, based on the principle that infants will look longer at more interesting stimuli.

Stimulus

An external event or factor that induces a response or reaction in an organism or in a system.

Developmental Psychologist

A specialist who studies the physical, cognitive, and social changes that occur throughout a person's lifespan.

Developmental Psychologist

A psychologist who studies the psychological growth and changes that occur throughout a person's life.