Question: Fuel efficiency In an earlier example, we examined data on highway gas mileages of model year 2012 midsize cars. The following dotplot shows the difference (highway - city) in EPA mileage ratings for each of the 24 car models from the earlier example.
![279_Fuel.png](https://secure.tutorsglobe.com/CMSImages/279_Fuel.png)
(a) Explain what the dot above 12 represents.
(b) What does the graph tell us about fuel economy in the city versus on the highway for these car models? Be specific.