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These data report characteristics of 196 types of cars sold in the United States in 2012. One column gives the

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These data report characteristics of 196 types of cars sold in the United States in 2012. One column gives the official mileage (combined MPG), and an-other gives the rated horsepower.
(a) Make a scatterplot of these two columns. Which variable makes the most sense to put on the x-axis, and which belongs on the y-axis?
(b) Describe any pattern that you see in the plot. Be sure to identify any outliers.
(c) Find the correlation between these two variables.
(d) Interpret the correlation in the context of these data. Does the correlation provide a good summary of the strength of the relationship?
(e) Use the correlation line to estimate the mileage of a car with 200 horsepower. Does this seem like a sensible procedure? What if the car has a 1.5 liter engine?

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Statistics For Business Decision Making And Analysis

Statistics For Business Decision Making And Analysis

ISBN: 9780321890269

2nd Edition

Authors: Robert Stine, Dean Foster

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Question Posted: July 14, 2015 08:04:05
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