The following data set shows the weekly advertising expenditure and sales of 12 retail merchants selling face masks and beside it is the scatter diagram. 600 Cost Sales 40 385 500 20 400 25 395 400 20 365 30 475 300 50 440 40 490 200 20 420 50 560 100 40 525 25 480 0 50 510 0 10 20 30 40 50 60 Advertising Cost 1. Based on the scatter plot, is it reasonable to perform simple linear regression between the two variables? 2. Between Sales and Advertising Cost, which is reasonable choice for the independent and dependent variable? 3. For the following values for advertising cost, is it appropriate to use the regression equation to estimate the weekly sales? If yes, what is the predicted value? If not, how come? a. $35 b. $60 Sales
The following data set shows the weekly advertising expenditure and sales of 12 retail merchants selling face masks and beside it is the scatter diagram. 600 Cost Sales 40 385 500 20 400 25 395 400 20 365 30 475 300 50 440 40 490 200 20 420 50 560 100 40 525 25 480 0 50 510 0 10 20 30 40 50 60 Advertising Cost 1. Based on the scatter plot, is it reasonable to perform simple linear regression between the two variables? 2. Between Sales and Advertising Cost, which is reasonable choice for the independent and dependent variable? 3. For the following values for advertising cost, is it appropriate to use the regression equation to estimate the weekly sales? If yes, what is the predicted value? If not, how come? a. $35 b. $60 Sales
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.6: Regression And Median-fit Lines
Problem 6PPS
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Transcribed Image Text:The following data set shows the weekly advertising expenditure and sales of 12 retail
merchants selling face masks and beside it is the scatter diagram.
600
Cost
Sales
40
385
500
20
400
25
395
400
20
365
30
475
300
50
440
40
490
200
20
420
50
560
100
40
525
25
480
0
50
510
0
10
20
30
40
50
60
Advertising Cost
1. Based on the scatter plot, is it reasonable to perform simple linear regression
between the two variables?
2. Between Sales and Advertising Cost, which is reasonable choice for the
independent and dependent variable?
3. For the following values for advertising cost, is it appropriate to use the regression
equation to estimate the weekly sales? If yes, what is the predicted value? If not,
how come?
a. $35
b. $60
Sales
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