income The average income in the sample was $553. Based on the least-squares line, the average grocery bill for this sample was approximately: O $100. $90. $95. $105.
income The average income in the sample was $553. Based on the least-squares line, the average grocery bill for this sample was approximately: O $100. $90. $95. $105.
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
An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. The
particular interest was whether higher income would result in shoppers spending more on groceries, A random sample of
shoppers at a local supermarket was obtained, and a questionnaire was administered asking about the weekly income of the
shopper's family and the grocery bill for that week. The gender of the shopper was also obtained. The graph below
contains a scatterplot with a least-squares line.
Transcribed Image Text:grocery bill
160
140
120
100
80
60
O
*
grocery Dill Tor selected subjects
200
O
O
400
600
80
800
10⁰
1000
Transcribed Image Text:income
The average income in the sample was $553. Based on the least-squares line, the average grocery bill for this sample was
approximately:
O $100.
$90.
$95.
$105.
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