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arff slurped Weka

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# Instances: 60 / # Attributes: 16
HDF5 (19.0 KB) XML CSV ARFF LibSVM Matlab Octave

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arff

Name

pollution

Version mldata

0

Comment

Data from StatLib (ftp stat.cmu.edu/datasets)

This is the pollution data so loved by writers of papers on ridge regression. Source: McDonald, G.C. and Schwing, R.C. (1973) 'Instabilities of regression estimates relating air pollution to mortality', Technometrics, vol.15, 463- 482. Variables in order: PREC Average annual precipitation in inches JANT Average January temperature in degrees F JULT Same for July OVR65 % of 1960 SMSA population aged 65 or older POPN Average household size EDUC Median school years completed by those over 22 HOUS % of housing units which are sound & with all facilities DENS Population per sq. mile in urbanized areas, 1960 NONW % non-white population in urbanized areas, 1960 WWDRK % employed in white collar occupations POOR % of families with income < $3000 HC Relative hydrocarbon pollution potential NOX Same for nitric oxides SO@ Same for sulphur dioxide HUMID Annual average % relative humidity at 1pm MORT Total age-adjusted mortality rate per 100,000

Names

PREC,JANT,JULT,OVR65,POPN,EDUC,HOUS,DENS,NONW,WWDRK,

Types

1. numeric
2. numeric
3. numeric
4. numeric
5. numeric
6. numeric
7. numeric
8. numeric
9. numeric
10. numeric

Data (first 10 data points)

PREC	JANT	JULT	OVR65	POPN	EDUC	HOUS	DENS	NONW	WWDRK	...
36.0	27.0	71.0	8.1	3.34	11.4	81.5	3243.0	8.8	42.6	...
35.0	23.0	72.0	11.1	3.14	11.0	78.8	4281.0	3.5	50.7	...
44.0	29.0	74.0	10.4	3.21	9.8	81.6	4260.0	0.8	39.4	...
47.0	45.0	79.0	6.5	3.41	11.1	77.5	3125.0	27.1	50.2	...
43.0	35.0	77.0	7.6	3.44	9.6	84.6	6441.0	24.4	43.7	...
53.0	45.0	80.0	7.7	3.45	10.2	66.8	3325.0	38.5	43.1	...
43.0	30.0	74.0	10.9	3.23	12.1	83.9	4679.0	3.5	49.2	...
45.0	30.0	73.0	9.3	3.29	10.6	86.0	2140.0	5.3	40.4	...
36.0	24.0	70.0	9.0	3.31	10.5	83.2	6582.0	8.1	42.5	...
36.0	27.0	72.0	9.5	3.36	10.7	79.3	4213.0	6.7	41.0	...
...	...	...	...	...	...	...	...	...	...	...

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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