Datafile Name: Cars 
Datafile Subjects: Consumer , Engineering 
Story Names: Clustering Cars , Fuel Efficient Buick Wagon , Measuring Fuel 
Efficiency 
Reference: Henderson, H. V. and Velleman, P. F. (1981), "Building Regression 
Models Interactively." Biometrics, 37, 391-411. Data originally collected from 
Consumer Reports. 
Authorization: Contact Consumer Reports 
Description: Measurements on 38 1978-79 model automobiles. The gas mileage in 
miles per gallon as measured by Consumers' Union on a test track. Other values 
as reported by automobile manufacturer. 
Number of cases: 38 
Variable Names: 
  Country: Nationality of manufacturer (eg. U.S., Japan) 
  Car: Car name (Make and model) 
  MPG: Miles per gallon, a measure of gas mileage 
  Drive_Ratio: Drive ratio of the automobile 
  Horsepower: Horsepower 
  Displacement: Displacement of the car (in cubic inches) 
  Cylinder: Number of cylinders