matrix of statistics corresponding to the variables and models. The matrix contains data on 74 models and 12 statistics. The variables are price in dollars, mileage in miles per gallon, repair records for 1977 and 1978 (coded on a 5-point scale where 5 is the best and 1 is the worst), headroom in inches, rear seat clearance in inches (distance from front seat back to rear seat back), trunk space in cubic feet, weight in pounds, length in inches, turning diameter in feet (clearance required to make a U turn), displacement in cubic inches, and gear ratio for high gear.