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Chapter 3: Q.10 (page 159)

Do heavier people burn more energy? Metabolic rate, the rate at which the body consumes energy, is important in studies of weight gain, dieting, and exercise. We have data on the lean body mass and resting metabolic rate for 12women who are subjects in a study of dieting. Lean body mass, given in kilograms, is a person鈥檚 weight leaving out all fat. Metabolic rate is measured in calories burned per 24hours. The researchers believe that lean body mass is an important influence on metabolic rate.

(a) Make a scatterplot on your calculator to examine the researchers鈥� belief.

(b) Describe the direction, form, and strength of the relationship.

Short Answer

Expert verified

a). Scatter plot:

b). Direction: Positive, Form: Linear, Strenght: Moderate.

Step by step solution

01

Part(a) Step 1: Given Information 

The researchers believe that lean body mass is an important influence on metabolic rate.

02

Part(a) Step 2: Explanation

The horizontal axis represents mass, whereas the vertical axis represents rate.

Scatter plots:

03

Part(b) Step 1: Given Information

The researchers believe that lean body mass is an important influence on metabolic rate.

04

Part(b) Step 2: Explanation

Direction: The direction is positive, Because the scatterplot slopes upwards.

Form: The form is linear,Because there is no curvature in the scatterplot and all points appear to be nearly on a line.

Strength: Moderate, due to the fact that the points are not too far apart yet not too close together.

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