Years of Annual Sales Salesperson Experience ($1,000s) 80 2. 97 3.
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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Question
Transcribed Image Text:equation for these data is ý = 83 + 4x.
Years of
Annual Sales
Salesperson
Experience
($1,000s)
1
80
3
97
3
4
102
4
4
107
6.
103
6.
8
116
7
10
119
8
10
123
9.
11
127
10
13
136
(a) Compute the residuals.
Years of
Annual Sales
Residuals
Experience
($1,000s)
80
3
97
4
102
4
107
6.
103
8.
116
10
119
10
123
11
127
13
136
Construct a residual plot.
16-
16-
12-
12
8-
4
4
-4
-4
..
-8
-8-
-12
-12
-16
-16
0 2
4 6 8
10
12
14
2.
4
6.
10
12
14
Years of Experience
Years of Experience
16
16
12
12
Residuals
Residuals
Transcribed Image Text:O Target : Expect More...
N Students NSU
Bb Module 1 - Spring 202...
X Chapter 14.8 Homewo...
Years of
Annual Sales
Residuals
Experience
($1,000s)
1
80
97
4
102
4
107
6
103
8
116
10
119
10
123
11
127
13
136
Construct a residual plot.
16-
16
12-
12
8.
8
4
4
-4
..
-4
-8
-8
-12
-12
– 12-
-16
-16
2
4 6 8
10
12
14
0 2
4 6 8
10
12
14
Years of Experience
Years of Experience
16-
16
12
12
8-
4
4
0-
-4
..
-4
-8-
-8
- 12-
-12
-16
-16
4
6
8
10
12
14
2
4
6
8
10
12
14
Years of Experience
Years of Experience
(b) Do the assumptions about the error terms seem reasonable in light of the residual plot?
The plot suggests a funnel pattern in the residuals indicating that the error term assumptions appear reasonable.
The plot suggests curvature in the residuals indicating that the error term assumptions appear reasonable.
O The plot suggests a generally horizontal band of residual points indicating that the error term assumptions do not appear
reasonable.
O The plot suggests a generally horizontal band of residual points indicating that the error term assumptions appear
reasonable.
O The plot suggests a funnel pattern in the residuals indicating that the error term assumptions do not appear reasonable.
Residuals
Residuals
Residuals
Residuals
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