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arff slurped Weka

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# Instances: 93 / # Attributes: 23
HDF5 (31.8 KB) XML CSV ARFF LibSVM Matlab Octave

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Original Data Format

arff

Name

'auto93.names'

Version mldata

0

Comment

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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

Names

Manufacturer,Type,City_MPG,Highway_MPG,Air_Bags_standard,Drive_train_type,Number_of_cylinders,Engine_size,Horsepower,RPM,

Types

1. nominal: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
2. nominal:Small,Midsize,Compact,Large,Sporty,Van
3. numeric
4. numeric
5. nominal:0,2,1
6. nominal:1,0,2
7. numeric
8. numeric
9. numeric
10. numeric

Data (first 10 data points)

Manu...	Type	City...	High...	Air_...	Driv...	Numb...	Engi...	Hors...	RPM	...
Acura	Small	25	31	0	1	4	1.8	140	6300	...
Acura	Mids...	18	25	2	1	6	3.2	200	5500	...
Audi	Comp...	20	26	1	1	6	2.8	172	5500	...
Audi	Mids...	19	26	2	1	6	2.8	172	5500	...
BMW	Mids...	22	30	1	0	4	3.5	208	5700	...
Buick	Mids...	22	31	1	1	4	2.2	110	5200	...
Buick	Large	19	28	1	1	6	3.8	170	4800	...
Buick	Large	16	25	1	0	6	5.7	180	4000	...
Buick	Mids...	19	27	1	1	6	3.8	170	4800	...
Cadi...	Large	16	25	1	1	8	4.9	200	4100	...
...	...	...	...	...	...	...	...	...	...	...

Description

A jarfile containing 37 regression problems, obtained from various sources (datasets-numeric.jar, 169,344 Bytes).

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revision 1

by mldata on 2010-11-06 09:57

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