i. ii. iii. iv. Calculate the slope for the regression line. (show all working) Calculate the intercept for the regression line. (show all working) Write the equation for the regression line. Forecast sales for a store if advertising spending is:- 1. $240,000 2. $300,000

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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QUESTION 1
a. Jerry Sam owns and operates a chain of 12 department stores in New Ville. Sales figures
and advertising expenses for the stores are provided in the table below. Sales are given in
millions of dollars; advertising expenses are in tens of thousands of dollars.
Advertising Sales
Store
1
2
3
4
5
7
8
9
10
11
12
i.
ii.
iii.
iv.
14
11
15
16
24
28
22
21
26
43
34
9
6
3
5
5
15
18
17
12
15
20
14
5
Calculate the slope for the regression line. (show all working)
Calculate the intercept for the regression line. (show all working)
Write the equation for the regression line.
Forecast sales for a store if advertising spending is:-
1. $240,000
2.
$300,000
Transcribed Image Text:QUESTION 1 a. Jerry Sam owns and operates a chain of 12 department stores in New Ville. Sales figures and advertising expenses for the stores are provided in the table below. Sales are given in millions of dollars; advertising expenses are in tens of thousands of dollars. Advertising Sales Store 1 2 3 4 5 7 8 9 10 11 12 i. ii. iii. iv. 14 11 15 16 24 28 22 21 26 43 34 9 6 3 5 5 15 18 17 12 15 20 14 5 Calculate the slope for the regression line. (show all working) Calculate the intercept for the regression line. (show all working) Write the equation for the regression line. Forecast sales for a store if advertising spending is:- 1. $240,000 2. $300,000
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