34. Vineyards Business analysts hoping to provide information help- ful to American grape growers compiled these data about vine- yards: size (acres), number of years in existence, state, varieties of grapes grown, average case price, gross sales, and percent profit.36. Fuel economy The Environmental Protection Agency (EPA) tracks fuel economy of automobiles based on information from the manufacturers (Ford, Toyota, etc.). Among the data the agency collects are the manufacturer, vehicle type (car, SUV. etc.), weight. horsepower, and gas mileage (mpg) for city and highway driving