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Create a splatter plot. See attached file for full problem description. How much does advertising impact market penetration?

Create a splatter plot. See attached file for full problem description.

How much does advertising impact market penetration? To assess the
impact of advertising in the tobacco industry, a study looked at the
amount of money spent on advertising a particular brand of cigarettes
and brand preference among adolescents and adults. The data are shown
below: (Source: Center for Disease Control Website).
Brand Advertising ($ millions) % Adolescents % Adults
Marlboro 75 60 23.5
Camel 43 13.3 6.7
Newport 35 12.7 4.8
Kool 21 1.2 3.9
Winston 17 1.2 3.9
Benson & Hedges 4 1 3
Salem 3 0.3 2.5
Create scatterplots below: (do not connect the dots, but show a "line
of best fit")
Adolescents
Adults
a) Which variable is the independent variable?
 
b) Which variable is the dependent variable?
 
Then: with the dependent variable on the vertical (y) axis
c) Create a scatter plot of advertising and adolescent
brand preference. Do you think there is a linear
relationship between the two variables?
Why or why not?
 
d) Create a scatter plot of advertising and adult
brand preference. Do you think there is a linear
relationship between the two variables?
Why or why not?
 

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