Submit a Research Proposal for instructor approval that includes your main variables, any control variables, how they are labeled, what your value ranges are, your specific data source, and your tentative research question. How does gas mileage depend on the [blank] of the vehicle? [Blank] could be weight, engine size, seating capacity, size (e.g. compact, sub-compact, SUV), etc. There should be multiple predictor variables included.
The variables will be V6 Engine Vs V8 engine. And also a sedan versus SUV. Remember I am located in the United States. So if you want to use a vehicle make sure that they are made in the United States and American models only. Also, make sure to use websites that are based in the United States. This is only a proposal. But it needs to be 2-3 pages long.