Question: 4.8 Does Fast Driving Waste Fuel? How does the fuel consumption of a car change as its speed increases? Here are data for a 2014

4.8 Does Fast Driving Waste Fuel? How does the fuel consumption of a car change as its speed increases? Here are data for a 2014 Chevrolet Cruze Turbo Diesel. Speed is measured in miles per hour, and fuel consumption is measured in miles per gallon:6 FASTDR Speed 10 20 30 40 50 60 70 80 Fuel 38.1 54.0 68.4 63.6 60.5 55.4 50.6 43.8

(a) Make a scatterplot. (Which is the explanatory variable?)

(b) Describe the form of the relationship. It is not linear. Explain why the form of the relationship makes sense.

(c) It does not make sense to describe the variables as either positively associated or negatively associated. Why?

(d) Is the relationship reasonably strong or quite weak? Explain your answer.

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