Answer c (c) The linear correlation coefficient for the data without Car 12 included is r=−0.943. Compare the results of parts (a) and (b) to the scatter diagram and linear correlation coefficient without Car 12 included. Why are the results here reasonable? The absolute value of the correlation coefficient ▼ and the sign of the correlation coefficient ▼ changed. did not change. The results here are reasonable because Car 12 ▼ has a weight outside the range of the other cars' weights. does not follow the overall pattern of the data. follows the overall pattern of the data. has a weight within the range of the other cars' weights.
Answer c (c) The linear correlation coefficient for the data without Car 12 included is r=−0.943. Compare the results of parts (a) and (b) to the scatter diagram and linear correlation coefficient without Car 12 included. Why are the results here reasonable? The absolute value of the correlation coefficient ▼ and the sign of the correlation coefficient ▼ changed. did not change. The results here are reasonable because Car 12 ▼ has a weight outside the range of the other cars' weights. does not follow the overall pattern of the data. follows the overall pattern of the data. has a weight within the range of the other cars' weights.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Answer c
(c) The linear correlation coefficient for the data without Car 12 included is
scatter diagram and linear correlation coefficient without Car 12 included. Why are the results here reasonable?
r=−0.943.
Compare the results of parts (a) and (b) to the The absolute value of the correlation coefficient
and the sign of the correlation coefficient
The results here are reasonable because Car 12
▼
▼
changed.
did not change.
▼
has a weight outside the range of the other cars' weights.
does not follow the overall pattern of the data.
follows the overall pattern of the data.
has a weight within the range of the other cars' weights.
Transcribed Image Text:An engineer wanted to determine how the weight of a car affects gas mileage. The accompanying data represent the weights of various domestic cars and their gas mileages in the city for a certain model yea
Suppose that we add Car 12 to the original data. Car 12 weighs 3,305 pounds and gets 19 miles per gallon. Complete parts (a) through (f) below.
Click the icon to view the data table.
(a) Draw the scatter diagram with Car 12 included.
Choose the correct graph below.
O A.
31-
23-
15+
2500 3300 4100
Weight (lbs)
Q
OB.
31-
23-
15
H
2500 3300 4100
Weight (lbs)
(b) Compute the linear correlation coefficient with Car 12 included.
The linear correlation coefficient with Car 12 included is r=
(Round to three decimal places as needed.)
Q
Q
per Gallon
31-
23-
15
2500 3300
+++++>
4100
Car
Car 1
Car 2
Car 3
Car 4
Car 5
Car 6
Car 7
Car 8
Car 9
Car 10
Car 11
Weights and Gas Mileages
3,755
3,944
Weight (lbs) Miles per Gallon
21
17
21
22
27
18
26
17
20
25
26
3,590
3,175
2,580
3,730
Q
2,605
3,772
Q
3,310
2,991
2,752
O D.
31-
23-
HICH
**
15-3+++++++------------------>
2500 3300 4100
X
Q
Q
✔
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 6 images
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman