Pollution dataset 1: Description. This datasets was proposed in McDonald, G.C. and Schwing, R.C. (1973) 'Instabilities of regression estimates relating air pollution to mortality', Technometrics, vol.15, 463-482. It contains 16 attributes describing 60 different pollution scenarios. The attributes are the following: 1) PRECReal: Average annual precipitation in inches 2) JANTReal: Average January temperature in degrees F 3) JULTReal: Same for July 4) OVR65Real: of 1960 SMSA population aged 65 or older 5) POPNReal: Average household size 6) EDUCReal: Median school years completed by those over 22 7) HOUSReal: of housing units which are sound and with all facilities 8) DENSReal: Population per sq. mile in urbanized areas, 1960 9) NONWReal: non-white population in urbanized areas, 1960 10) WWDRKReal: employed in white collar occupations 11) POORReal: of families with income less than $3000 12) HCReal: Relative hydrocarbon pollution potential 13) NOXReal: Same for nitric oxides 14) SO@Real: Same for sulphur dioxide 15) HUMIDReal: Annual average % relative humidity at 1pm 16) MORTReal: Total age-adjusted mortality rate per 100,000 2: Type. Unsupervised 3: Origin. Real world 4: Instances. 60 5: Features. 16 6: Missing values. No 7: Header. @relation Pollution @attribute PRECReal real [10.0, 60.0] @attribute JANTReal real [12.0, 67.0] @attribute JULTReal real [63.0, 85.0] @attribute OVR65Real real [5.6, 11.8] @attribute POPNReal real [2.92, 3.53] @attribute EDUCReal real [9.0, 12.3] @attribute HOUSReal real [66.8, 90.7] @attribute DENSReal real [1441.0, 9699.0] @attribute NONWReal real [0.8, 38.5] @attribute WWDRKReal real [33.8, 59.7] @attribute POORReal real [9.4, 26.4] @attribute HCReal real [1.0, 648.0] @attribute NOXReal real [1.0, 319.0] @attribute SO@Real real [1.0, 278.0] @attribute HUMIDReal real [38.0, 73.0] @attribute MORTReal real [790.733, 1113.156] @inputs PRECReal, JANTReal, JULTReal, OVR65Real, POPNReal, EDUCReal, HOUSReal, DENSReal, NONWReal, WWDRKReal, POORReal, HCReal, NOXReal, SO@Real, HUMIDReal, MORTReal