auto93.arff

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Description

93 new car models for the 1993 year. Several measures are given to evaluate price, mpg ratings, engine size, body size, and features.
File contents

%
% !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
%
% Attributes 2,4, and 6 deleted. Midrange price treated as the class 
% attribute.
%
% As used by Kilpatrick, D. & Cameron-Jones, M. (1998). Numeric prediction
% using instance-based learning with encoding length selection. In Progress
% in Connectionist-Based Information Systems. Singapore: Springer-Verlag.
%
% !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
%
% NAME:  1993 New Car Data
% TYPE:  Sample  
% SIZE:  93 observations, 26 variables
% 
% DESCRIPTIVE ABSTRACT:
% Specifications are given for 93 new car models for the 1993 year.
% Several measures are given to evaluate price, mpg ratings, engine size,
% body size, and features.
% 
% SOURCES:
% _Consumer Reports:  The 1993 Cars - Annual Auto Issue_ (April 1993), 
% Yonkers, NY: Consumers Union.
% _PACE New Car & Truck 1993 Buying Guide_ (1993), Milwaukee, WI: Pace
% Publications Inc.
% 
% VARIABLE DESCRIPTIONS:
% Line 1
% Columns
%  1 - 14  Manufacturer
% 15 - 29  Model
% 30 - 36  Type
%              Small, Sporty, Compact, Midsize, Large - as defined in the
%              _Consumer Reports_ article
% 38 - 41  Minimum Price (in $1,000) - Price for basic version of this model
% 43 - 46  Midrange Price (in $1,000) - Average of Min and Max prices
% 48 - 51  Maximum Price (in $1,000) - Price for a premium version
% 53 - 54  City MPG (miles per gallon by EPA rating)
% 56 - 57  Highway MPG
% 59 - 59  Air Bags standard
%              0 = none, 1 = driver only, 2 = driver & passenger
% 61 - 61  Drive train type
%              0 = rear wheel drive
%              1 = front wheel drive
%              2 = all wheel drive
% 63 - 63  Number of cylinders
% 65 - 67  Engine size (liters)
% 69 - 71  Horsepower (maximum)
% 73 - 76  RPM (revs per minute at maximum horsepower)
% 
% Line 2
% Columns
%  1 -  4  Engine revolutions per mile (in highest gear)
%  6 -  6  Manual transmission available
%              0 = No, 1 = Yes
%  8 - 11  Fuel tank capacity (gallons)
% 13 - 13  Passenger capacity (persons)
% 15 - 17  Length    (inches)
% 19 - 21  Wheelbase (inches)
% 23 - 24  Width     (inches)
% 26 - 27  U-turn space (feet)
% 29 - 32  Rear seat room (inches)
% 34 - 35  Luggage capacity (cu. ft.)
% 37 - 40  Weight (pounds)
% 42 - 42  Domestic?
%              0 = non-U.S. manufacturer, 1 = U.S. manufacturer
% 
% Values are aligned and delimited by blanks.
% Missing values are denoted with *.
% There are two data lines for each case.
% 
% SPECIAL NOTES:
% The only missing values are for CYLINDERS in the rotary engine Mazda
% RX-7, REAR SEAT room for the two-seaters (Corvette and RX-7), and
% LUGGAGE capacity for the vans and two-seaters.
% 
% WEIGHT is taken from the _Consumer Reports_ data and includes a full
% fuel tank, automatic transmission (if available), and air conditioning.
% 
% STORY BEHIND THE DATA:
% Cars were selected at random from among 1993 passenger car models that
% were listed in both the _Consumer Reports_ issue and the _PACE Buying
% Guide_.  Pickup trucks and Sport/Utility vehicles were eliminated due
% to incomplete information in the _Consumer Reports_ source.  Duplicate
% models (e.g., Dodge Shadow and Plymouth Sundance) were listed at most
% once.
% 
% A similar dataset for 1989 model cars appeared as one of the sample
% datasets shipped with the _Student Edition of Execustat_ (PWS-KENT
% 1990).
% 
% Further description can be found in the "Datasets and Stories" article
% "1993 New Car Data" in the _Journal of Statistics Education_ (Lock 1993).
% Send the message
% 
%      send jse/v1n1/datasets.lock
% 
% to the address archive@jse.stat.ncsu.edu
% 
% PEDAGOGICAL NOTES:
% This is a multi-purpose dataset that can be used at many points in an
% introductory course.  It includes many good numeric variables and
% several options for dividing the cars up into groups.  Students tend to
% be familiar with most of the variables (and specific car models).  They
% can anticipate and pose explanations for many of the relationships to
% be found in the data, although some surprises may be encountered.  One
% can easily find examples of pairs of variables that demonstrate strong
% or weak, positive or negative associations.  PRICE and MPG variables
% tend to be popular choices as "dependent" variables.  Basic graphs will
% often reveal unusual data values (like the price for a Mercedes-Benz).
% 
% REFERENCES:
% Lock, R. H. (1993), "1993 New Car Data," _Journal of Statistics
%    Education_, 1, No. 1.
% _Student Edition of Execustat_ (1990), Boston, MA: PWS-KENT 
%    Publishing Co.
% 
% SUBMITTED BY:
% Robin H. Lock
% Mathematics Department
% St. Lawrence University
% Canton, NY  13617
% (315) 379-5960
% rlock@stlawu.bitnet
% 

@relation 'auto93.names'
@attribute Manufacturer { Acura, Audi, BMW, Buick, Cadillac, Chevrolet, Chrysler, Dodge, Eagle, Ford, Geo, Honda, Hyundai, Infiniti, Lexus, Lincoln, Mazda, Mercedes-Benz, Mercury, Mitsubishi, Nissan, Oldsmobile, Plymouth, Pontiac, Saab, Saturn, Subaru, Suzuki, Toyota, Volkswagen, Volvo}
@attribute Type { Small, Midsize, Compact, Large, Sporty, Van}
@attribute City_MPG real
@attribute Highway_MPG real
@attribute Air_Bags_standard { 0, 2, 1}
@attribute Drive_train_type { 1, 0, 2}
@attribute Number_of_cylinders real
@attribute Engine_size real
@attribute Horsepower real
@attribute RPM real
@attribute Engine_revolutions_per_mile real
@attribute Manual_transmission_available { 1, 0}
@attribute Fuel_tank_capacity real
@attribute Passenger_capacity real
@attribute Length real
@attribute Wheelbase real
@attribute Width real
@attribute U-turn_space real
@attribute Rear_seat_room real
@attribute Luggage_capacity real
@attribute Weight real
@attribute Domestic { 0, 1}
@attribute class real
@data
Acura,Small,25,31,0,1,4,1.8,140,6300,2890,1,13.2,5,177,102,68,37,26.5,11,2705,0,15.9
Acura,Midsize,18,25,2,1,6,3.2,200,5500,2335,1,18,5,195,115,71,38,30,15,3560,0,33.9
Audi,Compact,20,26,1,1,6,2.8,172,5500,2280,1,16.9,5,180,102,67,37,28,14,3375,0,29.1
Audi,Midsize,19,26,2,1,6,2.8,172,5500,2535,1,21.1,6,193,106,70,37,31,17,3405,0,37.7
BMW,Midsize,22,30,1,0,4,3.5,208,5700,2545,1,21.1,4,186,109,69,39,27,13,3640,0,30
Buick,Midsize,22,31,1,1,4,2.2,110,5200,2565,0,16.4,6,189,105,69,41,28,16,2880,1,15.7
Buick,Large,19,28,1,1,6,3.8,170,4800,1570,0,18,6,200,111,74,42,30.5,17,3470,1,20.8
Buick,Large,16,25,1,0,6,5.7,180,4000,1320,0,23,6,216,116,78,45,30.5,21,4105,1,23.7
Buick,Midsize,19,27,1,1,6,3.8,170,4800,1690,0,18.8,5,198,108,73,41,26.5,14,3495,1,26.3
Cadillac,Large,16,25,1,1,8,4.9,200,4100,1510,0,18,6,206,114,73,43,35,18,3620,1,34.7
Cadillac,Midsize,16,25,2,1,8,4.6,295,6000,1985,0,20,5,204,111,74,44,31,14,3935,1,40.1
Chevrolet,Compact,25,36,0,1,4,2.2,110,5200,2380,1,15.2,5,182,101,66,38,25,13,2490,1,13.4
Chevrolet,Compact,25,34,1,1,4,2.2,110,5200,2665,1,15.6,5,184,103,68,39,26,14,2785,1,11.4
Chevrolet,Sporty,19,28,2,0,6,3.4,160,4600,1805,1,15.5,4,193,101,74,43,25,13,3240,1,15.1
Chevrolet,Midsize,21,29,0,1,4,2.2,110,5200,2595,0,16.5,6,198,108,71,40,28.5,16,3195,1,15.9
Chevrolet,Van,18,23,0,1,6,3.8,170,4800,1690,0,20,7,178,110,74,44,30.5,?,3715,1,16.3
Chevrolet,Van,15,20,0,2,6,4.3,165,4000,1790,0,27,8,194,111,78,42,33.5,?,4025,1,16.6
Chevrolet,Large,17,26,1,0,8,5,170,4200,1350,0,23,6,214,116,77,42,29.5,20,3910,1,18.8
Chevrolet,Sporty,17,25,1,0,8,5.7,300,5000,1450,1,20,2,179,96,74,43,?,?,3380,1,38
Chrysler,Large,20,28,2,1,6,3.3,153,5300,1990,0,18,6,203,113,74,40,31,15,3515,1,18.4
Chrysler,Compact,23,28,2,1,4,3,141,5000,2090,0,16,6,183,104,68,41,30.5,14,3085,1,15.8
Chrysler,Large,20,26,1,1,6,3.3,147,4800,1785,0,16,6,203,110,69,44,36,17,3570,1,29.5
Dodge,Small,29,33,0,1,4,1.5,92,6000,3285,1,13.2,5,174,98,66,32,26.5,11,2270,1,9.2
Dodge,Small,23,29,1,1,4,2.2,93,4800,2595,1,14,5,172,97,67,38,26.5,13,2670,1,11.3
Dodge,Compact,22,27,1,1,4,2.5,100,4800,2535,1,16,6,181,104,68,39,30.5,14,2970,1,13.3
Dodge,Van,17,21,1,2,6,3,142,5000,1970,0,20,7,175,112,72,42,26.5,?,3705,1,19
Dodge,Midsize,21,27,1,1,4,2.5,100,4800,2465,0,16,6,192,105,69,42,30.5,16,3080,1,15.6
Dodge,Sporty,18,24,1,2,6,3,300,6000,2120,1,19.8,4,180,97,72,40,20,11,3805,1,25.8
Eagle,Small,29,33,0,1,4,1.5,92,6000,2505,1,13.2,5,174,98,66,36,26.5,11,2295,1,12.2
Eagle,Large,20,28,2,1,6,3.5,214,5800,1980,0,18,6,202,113,74,40,30,15,3490,1,19.3
Ford,Small,31,33,0,1,4,1.3,63,5000,3150,1,10,4,141,90,63,33,26,12,1845,1,7.4
Ford,Small,23,30,0,1,4,1.8,127,6500,2410,1,13.2,5,171,98,67,36,28,12,2530,1,10.1
Ford,Compact,22,27,0,1,4,2.3,96,4200,2805,1,15.9,5,177,100,68,39,27.5,13,2690,1,11.3
Ford,Sporty,22,29,1,0,4,2.3,105,4600,2285,1,15.4,4,180,101,68,40,24,12,2850,1,15.9
Ford,Sporty,24,30,1,1,4,2,115,5500,2340,1,15.5,4,179,103,70,38,23,18,2710,1,14
Ford,Van,15,20,1,2,6,3,145,4800,2080,1,21,7,176,119,72,45,30,?,3735,1,19.9
Ford,Midsize,21,30,1,1,6,3,140,4800,1885,0,16,5,192,106,71,40,27.5,18,3325,1,20.2
Ford,Large,18,26,1,0,8,4.6,190,4200,1415,0,20,6,212,114,78,43,30,21,3950,1,20.9
Geo,Small,46,50,0,1,3,1,55,5700,3755,1,10.6,4,151,93,63,34,27.5,10,1695,0,8.4
Geo,Sporty,30,36,1,1,4,1.6,90,5400,3250,1,12.4,4,164,97,67,37,24.5,11,2475,0,12.5
Honda,Sporty,24,31,2,1,4,2.3,160,5800,2855,1,15.9,4,175,100,70,39,23.5,8,2865,0,19.8
Honda,Small,42,46,1,1,4,1.5,102,5900,2650,1,11.9,4,173,103,67,36,28,12,2350,0,12.1
Honda,Compact,24,31,2,1,4,2.2,140,5600,2610,1,17,4,185,107,67,41,28,14,3040,0,17.5
Hyundai,Small,29,33,0,1,4,1.5,81,5500,2710,1,11.9,5,168,94,63,35,26,11,2345,0,8
Hyundai,Small,22,29,0,1,4,1.8,124,6000,2745,1,13.7,5,172,98,66,36,28,12,2620,0,10
Hyundai,Sporty,26,34,0,1,4,1.5,92,5550,2540,1,11.9,4,166,94,64,34,23.5,9,2285,0,10
Hyundai,Midsize,20,27,0,1,4,2,128,6000,2335,1,17.2,5,184,104,69,41,31,14,2885,0,13.9
Infiniti,Midsize,17,22,1,0,8,4.5,278,6000,1955,0,22.5,5,200,113,72,42,29,15,4000,0,47.9
Lexus,Midsize,18,24,1,1,6,3,185,5200,2325,1,18.5,5,188,103,70,40,27.5,14,3510,0,28
Lexus,Midsize,18,23,2,0,6,3,225,6000,2510,1,20.6,4,191,106,71,39,25,9,3515,0,35.2
Lincoln,Midsize,17,26,2,1,6,3.8,160,4400,1835,0,18.4,6,205,109,73,42,30,19,3695,1,34.3
Lincoln,Large,18,26,2,0,8,4.6,210,4600,1840,0,20,6,219,117,77,45,31.5,22,4055,1,36.1
Mazda,Small,29,37,0,1,4,1.6,82,5000,2370,1,13.2,4,164,97,66,34,27,16,2325,0,8.3
Mazda,Small,28,36,0,1,4,1.8,103,5500,2220,1,14.5,5,172,98,66,36,26.5,13,2440,0,11.6
Mazda,Compact,26,34,1,1,4,2.5,164,5600,2505,1,15.5,5,184,103,69,40,29.5,14,2970,0,16.5
Mazda,Van,18,24,0,2,6,3,155,5000,2240,0,19.6,7,190,110,72,39,27.5,?,3735,0,19.1
Mazda,Sporty,17,25,1,0,?,1.3,255,6500,2325,1,20,2,169,96,69,37,?,?,2895,0,32.5
Mercedes-Benz,Compact,20,29,1,0,4,2.3,130,5100,2425,1,14.5,5,175,105,67,34,26,12,2920,0,31.9
Mercedes-Benz,Midsize,19,25,2,0,6,3.2,217,5500,2220,0,18.5,5,187,110,69,37,27,15,3525,0,61.9
Mercury,Sporty,23,26,1,1,4,1.6,100,5750,2475,1,11.1,4,166,95,65,36,19,6,2450,1,14.1
Mercury,Midsize,19,26,0,0,6,3.8,140,3800,1730,0,18,5,199,113,73,38,28,15,3610,1,14.9
Mitsubishi,Small,29,33,0,1,4,1.5,92,6000,2505,1,13.2,5,172,98,67,36,26,11,2295,0,10.3
Mitsubishi,Midsize,18,24,1,1,6,3,202,6000,2210,0,19,5,190,107,70,43,27.5,14,3730,0,26.1
Nissan,Small,29,33,1,1,4,1.6,110,6000,2435,1,13.2,5,170,96,66,33,26,12,2545,0,11.8
Nissan,Compact,24,30,1,1,4,2.4,150,5600,2130,1,15.9,5,181,103,67,40,28.5,14,3050,0,15.7
Nissan,Van,17,23,0,1,6,3,151,4800,2065,0,20,7,190,112,74,41,27,?,4100,0,19.1
Nissan,Midsize,21,26,1,1,6,3,160,5200,2045,0,18.5,5,188,104,69,41,28.5,14,3200,0,21.5
Oldsmobile,Compact,24,31,0,1,4,2.3,155,6000,2380,0,15.2,5,188,103,67,39,28,14,2910,1,13.5
Oldsmobile,Midsize,23,31,1,1,4,2.2,110,5200,2565,0,16.5,5,190,105,70,42,28,16,2890,1,16.3
Oldsmobile,Van,18,23,0,1,6,3.8,170,4800,1690,0,20,7,194,110,74,44,30.5,?,3715,1,19.5
Oldsmobile,Large,19,28,1,1,6,3.8,170,4800,1570,0,18,6,201,111,74,42,31.5,17,3470,1,20.7
Plymouth,Sporty,23,30,0,2,4,1.8,92,5000,2360,1,15.9,4,173,97,67,39,24.5,8,2640,1,14.4
Pontiac,Small,31,41,0,1,4,1.6,74,5600,3130,1,13.2,4,177,99,66,35,25.5,17,2350,1,9
Pontiac,Compact,23,31,0,1,4,2,110,5200,2665,1,15.2,5,181,101,66,39,25,13,2575,1,11.1
Pontiac,Sporty,19,28,2,0,6,3.4,160,4600,1805,1,15.5,4,196,101,75,43,25,13,3240,1,17.7
Pontiac,Midsize,19,27,0,1,6,3.4,200,5000,1890,1,16.5,5,195,108,72,41,28.5,16,3450,1,18.5
Pontiac,Large,19,28,2,1,6,3.8,170,4800,1565,0,18,6,177,111,74,43,30.5,18,3495,1,24.4
Saab,Compact,20,26,1,1,4,2.1,140,6000,2910,1,18,5,184,99,67,37,26.5,14,2775,0,28.7
Saturn,Small,28,38,1,1,4,1.9,85,5000,2145,1,12.8,5,176,102,68,40,26.5,12,2495,1,11.1
Subaru,Small,33,37,0,2,3,1.2,73,5600,2875,1,9.2,4,146,90,60,32,23.5,10,2045,0,8.4
Subaru,Small,25,30,0,2,4,1.8,90,5200,3375,1,15.9,5,175,97,65,35,27.5,15,2490,0,10.9
Subaru,Compact,23,30,1,2,4,2.2,130,5600,2330,1,15.9,5,179,102,67,37,27,14,3085,0,19.5
Suzuki,Small,39,43,0,1,3,1.3,70,6000,3360,1,10.6,4,161,93,63,34,27.5,10,1965,0,8.6
Toyota,Small,32,37,1,1,4,1.5,82,5200,3505,1,11.9,5,162,94,65,36,24,11,2055,0,9.8
Toyota,Sporty,25,32,1,1,4,2.2,135,5400,2405,1,15.9,4,174,99,69,39,23,13,2950,0,18.4
Toyota,Midsize,22,29,1,1,4,2.2,130,5400,2340,1,18.5,5,188,103,70,38,28.5,15,3030,0,18.2
Toyota,Van,18,22,1,2,4,2.4,138,5000,2515,1,19.8,7,187,113,71,41,35,?,3785,0,22.7
Volkswagen,Small,25,33,0,1,4,1.8,81,5500,2550,1,12.4,4,163,93,63,34,26,10,2240,0,9.1
Volkswagen,Van,17,21,0,1,5,2.5,109,4500,2915,1,21.1,7,187,115,72,38,34,?,3960,0,19.7
Volkswagen,Compact,21,30,0,1,4,2,134,5800,2685,1,18.5,5,180,103,67,35,31.5,14,2985,0,20
Volkswagen,Sporty,18,25,0,1,6,2.8,178,5800,2385,1,18.5,4,159,97,66,36,26,15,2810,0,23.3
Volvo,Compact,21,28,1,0,4,2.3,114,5400,2215,1,15.8,5,190,104,67,37,29.5,14,2985,0,22.7
Volvo,Midsize,20,28,2,1,5,2.4,168,6200,2310,1,19.3,5,184,105,69,38,30,15,3245,0,26.7

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