Are the advertising dollars spent by a company related to total sales revenue? The following data represent the advertising dollars and the sales revenues for various companies in a given industry during a recent year. Construct a scatter plot of the data from the two variables and discuss the relationship between the two variables.
Advertising ..... Sales (In $ millions)
(In $ millions)
4.2 ........................... 155.7
1.6 ........................... 87.3
6.3 ........................... 135.6
2.7 ........................... 99.0
10.4 ........................... 168.2
7.1 ........................... 136.9
5.5 ........................... 101.4
8.3 ........................... 158.2