All attributes in the USCensus1990.data.txt data set are integer valued.

Attribute names
---------------
dAge 
dAncstry1 
dAncstry2 
iAvail 
iCitizen 
iClass 
dDepart 
iDisabl1 
iDisabl2 
iEnglish 
iFeb55 
iFertil 
dHispanic
dHour89 
dHours
iImmigr 
dIncome1
dIncome2 
dIncome3 
dIncome4
dIncome5 
dIncome6 
dIncome7
dIncome8 
dIndustry 
iKorean
iLang1 
iLooking
iMarital 
iMay75880 
iMeans 
iMilitary 
iMobility 
iMobillim 
dOccup 
iOthrserv 
iPerscare 
dPOB 
dPoverty 
dPwgt1 
iRagechld 
dRearning
iRelat1 
iRelat2
iRemplpar 
iRiders
iRlabor 
iRownchld
dRpincome 
iRPOB
iRrelchld 
iRspouse
iRvetserv 
iSchool
iSept80 
iSex
iSubfam1 
iSubfam2
iTmpabsnt 
dTravtime 
iVietnam 
dWeek89 
iWork89 
iWorklwk 
iWWII 
iYearsch 
iYearwrk 
dYrsserv