Pull up the StatCrunch data set titled Bear Measurements Data Set created by Imazaleski. Use the values for the chest and age of the bears to answer the questions below. To make sure we understand the data, keep the following in mind: Age is the bear's age in months Month is the month the measurements were taken Head Length is the length of the head in inches Head Width is the width of the head in inches Length is the length of the body in inches Neck is the distance around the neck in inches Chest is the distance around the chest in inches Weight is in pounds a. What is the value of r (correlation coefficient)? Is there linear correlation between the 2 variables? Explain. b. Identify the dependent variable and the independent variable. c. What is the equation of the least-squares regression line?
Pull up the StatCrunch data set titled Bear Measurements Data Set created by Imazaleski. Use the values for the chest and age of the bears to answer the questions below. To make sure we understand the data, keep the following in mind: Age is the bear's age in months Month is the month the measurements were taken Head Length is the length of the head in inches Head Width is the width of the head in inches Length is the length of the body in inches Neck is the distance around the neck in inches Chest is the distance around the chest in inches Weight is in pounds a. What is the value of r (correlation coefficient)? Is there linear correlation between the 2 variables? Explain. b. Identify the dependent variable and the independent variable. c. What is the equation of the least-squares regression line?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Pull up the StatCrunch data set titled Bear Measurements Data Set created by Imazaleski. Use the values for the chest and age
of the bears to answer the questions below.
To make sure we understand the data, keep the following in mind:
Age is the bear's age in months
Month is the month the measurements were
taken
Head Length is the length of the head in
inches
Head Width is the width of the head in inches
Length is the length of the body in inches
data.
Neck is the distance around the neck in
inches
Chest is the distance around the chest in
inches
Weight is in pounds
a. What is the value of r (correlation coefficient)? Is there linear correlation between the 2 variables? Explain.
b. Identify the dependent variable and the independent variable.
c. What is the equation of the least-squares regression line?
d. What is the slope of the least-squares regression line? Interpret it in context of the
e. What is the intercept of the least-squares regression line? Interpret it in context of the data.
f. Using the regression equation, predict the distance around the chest of a bear that is 10 years old.
g. Using the regression equation, predict the age of a bear that has a distance around its chest of 60 inches.
Transcribed Image Text:Bear Measurements
StatCrunch Applets
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34
5
6
7
8
9
10
11
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13
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16
17
18
19
20
21
22
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26
27
Age
19
55
81
115
104
Edit -
Month
7
9
7
8
Data Stat
Head Length
11
16.5
15.5
17
15.5
Graph
Head Width
Y
5.5
9
8
10
6.5
Help -
Neck
16
28
31
315
22
Length
53
67.5
72
72
*65
Chest
26
37
46
49
42
Weight
80
344
416
348
166
var9
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