A marketing analyst is studying the relationship between the money spent on TV advertising (x) and the increase in sales (y). One study reported the following data (in $) for a particular company.
Money spent on TV advertising (x) Increase in sales (y)
380 550
645 780
360 530
900 1200
540 620
670 800
820 910
1050 1400
760 830
800 905
a. Using a software package of your choice, develop a scatterplot and determine whether a linear relationship provides a good fit to this data set.
b. Using a software package of your choice, report the regression analysis results.