1. Determine the LSRL equation. 2. Describe the slope and its meaning in the context of the data. 3. Use the LSRL to predict how much of a tip Brianna should expect for a $150.00. Does that tip match up with her other tips? Why or why not? 4. Determine the residual for the $102.21 order. What does this residual tell you about the tip this customer left for Brianna? 5. Is a linear model the most appropriate for this data? Why or why not?
1. Determine the LSRL equation. 2. Describe the slope and its meaning in the context of the data. 3. Use the LSRL to predict how much of a tip Brianna should expect for a $150.00. Does that tip match up with her other tips? Why or why not? 4. Determine the residual for the $102.21 order. What does this residual tell you about the tip this customer left for Brianna? 5. Is a linear model the most appropriate for this data? Why or why not?
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
I need answer for 2,3,4. Can someone please help me out
Transcribed Image Text:Brianna is a shopper for Instacart. She was wondering if there was a correlation between the
amount of an order and the percentage of a tip that the customer would give her. She collected
data from her 10 most recent shopping trips and produced the following information regarding the
relationship between the order amount and the tip percentage each customer gave her.
Data Table
Order Amount S
Tip Percentage %
1
29.75
14
2
172.43
12
3
102.21
13
4
78.6
15
48.89
17
256.54
10
7
24.14
17
8
118.63
15
214.72
11
10
187.2
10
18.0-
16.5
Residual Table
15.0
Order Amount S
Resid
13.5
1
29.75
-2.1028
12.0
2
172.43
0.019
102.21
-1.0096
10.5
78.6
0.3084
100
250
150
Order Amount $
50
200
300
48.89
1.4501
256.54
0.4488
7
24.14
0.7351
Regression Output for Tip Percentage % vs. Order Amount $
118.63
1.4648
Сoef
SE Coef
T
P
214.72
0.2407
Constant
16.9623
0.7615
22.2733
0.0000
10
187.2
-1.5543
Order Amount $
-0.0289
0.0052
-5.5135
0.0006
S = 1.275
R-Sq = 0.7917
Adj. R-Sq = 0.7656
r= -0.8898
Residual Plot
2.
1
lual
Tip Percentage %
Transcribed Image Text:9
214.72
0.2407
Constant
16.9623
0.7615
22.2733
0.0000
10
187.2
-1.5543
Order Amount $
-0.0289
0.0052
-5.5135
0.0006
S= 1.275
R-Sq = 0.7917
Adj. R-Sq = 0.7656
r= -0.8898
Residual Plot
1
-2
50
100
150
200
250
300
Order Amount $
1. Determine the LSRL equation.
2. Describe the slope and its meaning in the context of the data.
3. Use the LSRL to predict how much of a tip Brianna should expect for a $150.00. Does that tip
match up with her other tips? Why or why not?
4. Determine the residual for the $102.21 order. What does this residual tell you about the tip
this customer left for Brianna?
5. Is a linear model the most appropriate for this data? Why or why not?
1. y=-0.0289x+16.9623
2.
3.
2. y=-0.0289(150.00)+16.9623=12.6273
1
3
4
7
8
9
10
Next
Residual
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 5 steps with 2 images
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