;% 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 < $3000 ;% HC Relative hydrocarbon pollution potential ;% NOX Same for nitric oxides ;% SO@ Same for sulphur dioxide ;% HUMID Annual average % relative humidity at 1pm ;% MORT Total age-adjusted mortality rate per 100,000 (defun pollution () (data :name 'pollution :columns '($PREC $JANT $JULT $OVR65 $POPN $EDUC $HOUS $DENS $NONW $WWDRK $POOR $HC $NOX $SO@ $HUMID $MORT) :egs '( (36.0 27.0 71.0 8.1 3.34 11.4 81.5 3243.0 8.8 42.6 11.7 21.0 15.0 59.0 59.0 921.870) (35.0 23.0 72.0 11.1 3.14 11.0 78.8 4281.0 3.5 50.7 14.4 8.0 10.0 39.0 57.0 997.875) (44.0 29.0 74.0 10.4 3.21 9.8 81.6 4260.0 0.8 39.4 12.4 6.0 6.0 33.0 54.0 962.354) (47.0 45.0 79.0 6.5 3.41 11.1 77.5 3125.0 27.1 50.2 20.6 18.0 8.0 24.0 56.0 982.291) (43.0 35.0 77.0 7.6 3.44 9.6 84.6 6441.0 24.4 43.7 14.3 43.0 38.0 206.0 55.0 1071.289) (53.0 45.0 80.0 7.7 3.45 10.2 66.8 3325.0 38.5 43.1 25.5 30.0 32.0 72.0 54.0 1030.380) (43.0 30.0 74.0 10.9 3.23 12.1 83.9 4679.0 3.5 49.2 11.3 21.0 32.0 62.0 56.0 934.700) (45.0 30.0 73.0 9.3 3.29 10.6 86.0 2140.0 5.3 40.4 10.5 6.0 4.0 4.0 56.0 899.529) (36.0 24.0 70.0 9.0 3.31 10.5 83.2 6582.0 8.1 42.5 12.6 18.0 12.0 37.0 61.0 1001.902) (36.0 27.0 72.0 9.5 3.36 10.7 79.3 4213.0 6.7 41.0 13.2 12.0 7.0 20.0 59.0 912.347) (52.0 42.0 79.0 7.7 3.39 9.6 69.2 2302.0 22.2 41.3 24.2 18.0 8.0 27.0 56.0 1017.613) (33.0 26.0 76.0 8.6 3.20 10.9 83.4 6122.0 16.3 44.9 10.7 88.0 63.0 278.0 58.0 1024.885) (40.0 34.0 77.0 9.2 3.21 10.2 77.0 4101.0 13.0 45.7 15.1 26.0 26.0 146.0 57.0 970.467) (35.0 28.0 71.0 8.8 3.29 11.1 86.3 3042.0 14.7 44.6 11.4 31.0 21.0 64.0 60.0 985.950) (37.0 31.0 75.0 8.0 3.26 11.9 78.4 4259.0 13.1 49.6 13.9 23.0 9.0 15.0 58.0 958.839) (35.0 46.0 85.0 7.1 3.22 11.8 79.9 1441.0 14.8 51.2 16.1 1.0 1.0 1.0 54.0 860.101) (36.0 30.0 75.0 7.5 3.35 11.4 81.9 4029.0 12.4 44.0 12.0 6.0 4.0 16.0 58.0 936.234) (15.0 30.0 73.0 8.2 3.15 12.2 84.2 4824.0 4.7 53.1 12.7 17.0 8.0 28.0 38.0 871.766) (31.0 27.0 74.0 7.2 3.44 10.8 87.0 4834.0 15.8 43.5 13.6 52.0 35.0 124.0 59.0 959.221) (30.0 24.0 72.0 6.5 3.53 10.8 79.5 3694.0 13.1 33.8 12.4 11.0 4.0 11.0 61.0 941.181) (31.0 45.0 85.0 7.3 3.22 11.4 80.7 1844.0 11.5 48.1 18.5 1.0 1.0 1.0 53.0 891.708) (31.0 24.0 72.0 9.0 3.37 10.9 82.8 3226.0 5.1 45.2 12.3 5.0 3.0 10.0 61.0 871.338) (42.0 40.0 77.0 6.1 3.45 10.4 71.8 2269.0 22.7 41.4 19.5 8.0 3.0 5.0 53.0 971.122) (43.0 27.0 72.0 9.0 3.25 11.5 87.1 2909.0 7.2 51.6 9.5 7.0 3.0 10.0 56.0 887.466) (46.0 55.0 84.0 5.6 3.35 11.4 79.7 2647.0 21.0 46.9 17.9 6.0 5.0 1.0 59.0 952.529) (39.0 29.0 75.0 8.7 3.23 11.4 78.6 4412.0 15.6 46.6 13.2 13.0 7.0 33.0 60.0 968.665) (35.0 31.0 81.0 9.2 3.10 12.0 78.3 3262.0 12.6 48.6 13.9 7.0 4.0 4.0 55.0 919.729) (43.0 32.0 74.0 10.1 3.38 9.5 79.2 3214.0 2.9 43.7 12.0 11.0 7.0 32.0 54.0 844.053) (11.0 53.0 68.0 9.2 2.99 12.1 90.6 4700.0 7.8 48.9 12.3 648.0 319.0 130.0 47.0 861.833) (30.0 35.0 71.0 8.3 3.37 9.9 77.4 4474.0 13.1 42.6 17.7 38.0 37.0 193.0 57.0 989.265) (50.0 42.0 82.0 7.3 3.49 10.4 72.5 3497.0 36.7 43.3 26.4 15.0 18.0 34.0 59.0 1006.490) (60.0 67.0 82.0 10.0 2.98 11.5 88.6 4657.0 13.5 47.3 22.4 3.0 1.0 1.0 60.0 861.439) (30.0 20.0 69.0 8.8 3.26 11.1 85.4 2934.0 5.8 44.0 9.4 33.0 23.0 125.0 64.0 929.150) (25.0 12.0 73.0 9.2 3.28 12.1 83.1 2095.0 2.0 51.9 9.8 20.0 11.0 26.0 58.0 857.622) (45.0 40.0 80.0 8.3 3.32 10.1 70.3 2682.0 21.0 46.1 24.1 17.0 14.0 78.0 56.0 961.009) (46.0 30.0 72.0 10.2 3.16 11.3 83.2 3327.0 8.8 45.3 12.2 4.0 3.0 8.0 58.0 923.234) (54.0 54.0 81.0 7.4 3.36 9.7 72.8 3172.0 31.4 45.5 24.2 20.0 17.0 1.0 62.0 1113.156) (42.0 33.0 77.0 9.7 3.03 10.7 83.5 7462.0 11.3 48.7 12.4 41.0 26.0 108.0 58.0 994.648) (42.0 32.0 76.0 9.1 3.32 10.5 87.5 6092.0 17.5 45.3 13.2 29.0 32.0 161.0 54.0 1015.023) (36.0 29.0 72.0 9.5 3.32 10.6 77.6 3437.0 8.1 45.5 13.8 45.0 59.0 263.0 56.0 991.290) (37.0 38.0 67.0 11.3 2.99 12.0 81.5 3387.0 3.6 50.3 13.5 56.0 21.0 44.0 73.0 893.991) (42.0 29.0 72.0 10.7 3.19 10.1 79.5 3508.0 2.2 38.8 15.7 6.0 4.0 18.0 56.0 938.500) (41.0 33.0 77.0 11.2 3.08 9.6 79.9 4843.0 2.7 38.6 14.1 11.0 11.0 89.0 54.0 946.185) (44.0 39.0 78.0 8.2 3.32 11.0 79.9 3768.0 28.6 49.5 17.5 12.0 9.0 48.0 53.0 1025.502) (32.0 25.0 72.0 10.9 3.21 11.1 82.5 4355.0 5.0 46.4 10.8 7.0 4.0 18.0 60.0 874.281) (34.0 32.0 79.0 9.3 3.23 9.7 76.8 5160.0 17.2 45.1 15.3 31.0 15.0 68.0 57.0 953.560) (10.0 55.0 70.0 7.3 3.11 12.1 88.9 3033.0 5.9 51.0 14.0 144.0 66.0 20.0 61.0 839.709) (18.0 48.0 63.0 9.2 2.92 12.2 87.7 4253.0 13.7 51.2 12.0 311.0 171.0 86.0 71.0 911.701) (13.0 49.0 68.0 7.0 3.36 12.2 90.7 2702.0 3.0 51.9 9.7 105.0 32.0 3.0 71.0 790.733) (35.0 40.0 64.0 9.6 3.02 12.2 82.5 3626.0 5.7 54.3 10.1 20.0 7.0 20.0 72.0 899.264) (45.0 28.0 74.0 10.6 3.21 11.1 82.6 1883.0 3.4 41.9 12.3 5.0 4.0 20.0 56.0 904.155) (38.0 24.0 72.0 9.8 3.34 11.4 78.0 4923.0 3.8 50.5 11.1 8.0 5.0 25.0 61.0 950.672) (31.0 26.0 73.0 9.3 3.22 10.7 81.3 3249.0 9.5 43.9 13.6 11.0 7.0 25.0 59.0 972.464) (40.0 23.0 71.0 11.3 3.28 10.3 73.8 1671.0 2.5 47.4 13.5 5.0 2.0 11.0 60.0 912.202) (41.0 37.0 78.0 6.2 3.25 12.3 89.5 5308.0 25.9 59.7 10.3 65.0 28.0 102.0 52.0 967.803) (28.0 32.0 81.0 7.0 3.27 12.1 81.0 3665.0 7.5 51.6 13.2 4.0 2.0 1.0 54.0 823.764) (45.0 33.0 76.0 7.7 3.39 11.3 82.2 3152.0 12.1 47.3 10.9 14.0 11.0 42.0 56.0 1003.502) (45.0 24.0 70.0 11.8 3.25 11.1 79.8 3678.0 1.0 44.8 14.0 7.0 3.0 8.0 56.0 895.696) (42.0 33.0 76.0 9.7 3.22 9.0 76.2 9699.0 4.8 42.2 14.5 8.0 8.0 49.0 54.0 911.817) (38.0 28.0 72.0 8.9 3.48 10.7 79.8 3451.0 11.7 37.5 13.0 14.0 13.0 39.0 58.0 954.442) )))