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Campaign cost, X (in millions of dollars) 3.30 2.35 2.07 3.97 2.26 1.27 3.10 3.03 1.63 1.61 3.53 3.92 Increase in sales, y (percent) 6.55 6.62 6.70 6.80 6.54 6.38 6.65 6.92 6.66 6.20 6.76 7.05 xy 21.615 15.557 13.869 26.996 14.7804 8.1026 20.615 20.9676 10.8558 9.982 23.8628 27.636

Campaign cost, X (in millions of dollars) 3.30 2.35 2.07 3.97 2.26 1.27 3.10 3.03 1.63 1.61 3.53 3.92 Increase in sales, y (percent) 6.55 6.62 6.70 6.80 6.54 6.38 6.65 6.92 6.66 6.20 6.76 7.05 xy 21.615 15.557 13.869 26.996 14.7804 8.1026 20.615 20.9676 10.8558 9.982 23.8628 27.636

MATLAB: An Introduction with Applications
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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What is the slope of the least-squares regression line for these data? Carry your intermediate computations round your answer to at least two decimal places. (If necessary, consult a list of formulas.) 0
Transcribed Image Text:What is the slope of the least-squares regression line for these data? Carry your intermediate computations round your answer to at least two decimal places. (If necessary, consult a list of formulas.) 0
An advertising firm wishes to demonstrate to its clients the effectiveness of the advertising ca Español it h bivariate data on twelve recent campaigns, including the cost of each campaign (denoted by X, in millions percentage increase in sales (denoted by y) following the campaign, were presented by the firm. A scatter 1. Also given is the product of the campaign cost and the percentage increase in sales for each of the twel written in the column labelled "XY", may aid in calculations.) Campaign cost, X (in millions of dollars) 3.30 2.35 2.07 3.97 2.26 1.27 3.10 3.03 1.63 1.61 3.53 3.92 Send data to calculator Increase in sales, y (percent) 6.55 6.62 6.70 6.80 6.54 6.38 6.65 6.92 6.66 6.20 6.76 7.05 xy 21.615 15.557 13.869 26.996 14.7804 8.1026 20.615 20.9676 10.8558 9.982 23.8628 27.636 Increase in sales (percent) Figure 1 7.2+ 7+ 6.8- 6.6 6.4- 6.2. X x 1.5 2 2.5 Campaign cos (in millions of doll 3
Transcribed Image Text:An advertising firm wishes to demonstrate to its clients the effectiveness of the advertising ca Español it h bivariate data on twelve recent campaigns, including the cost of each campaign (denoted by X, in millions percentage increase in sales (denoted by y) following the campaign, were presented by the firm. A scatter 1. Also given is the product of the campaign cost and the percentage increase in sales for each of the twel written in the column labelled "XY", may aid in calculations.) Campaign cost, X (in millions of dollars) 3.30 2.35 2.07 3.97 2.26 1.27 3.10 3.03 1.63 1.61 3.53 3.92 Send data to calculator Increase in sales, y (percent) 6.55 6.62 6.70 6.80 6.54 6.38 6.65 6.92 6.66 6.20 6.76 7.05 xy 21.615 15.557 13.869 26.996 14.7804 8.1026 20.615 20.9676 10.8558 9.982 23.8628 27.636 Increase in sales (percent) Figure 1 7.2+ 7+ 6.8- 6.6 6.4- 6.2. X x 1.5 2 2.5 Campaign cos (in millions of doll 3
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