Use the two regression lines to estimate when sales in grocery stores are likely to equal sales in warehouse clubs. What type of prediction did you just make? Explain.
Use the two regression lines to estimate when sales in grocery stores are likely to equal sales in warehouse clubs. What type of prediction did you just make? Explain.
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
Use the two regression lines to estimate when sales in grocery stores are likely to equal sales in warehouse clubs.
What type of prediction did you just make? Explain.

Transcribed Image Text:Mean seasonal sales (in milli
50000
45000
40000
35000
30000
25000
20000
15000
10000
5000
Grocery Stores vs. Warehouse Clubs Sales
y= 1,170x + 30,630
cc = 0.98
soft Notes
y=2090x + 6740
Cc - 0.99
Grocery
Warehouse Club
4
8
Years since 1998
Source: http://www.economagic.com/cenret.htm.
0.4
10
12
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