k-means clustering part 2

Introduction

The must appropriate selection on variables is the cluster of five elements.
This grouping offers the particularity to give the same number of cluster than the agglomerative classification method.

The first group

PctForeignBorn,PctHousNoPhone,PctIlleg,PctLargHouseFam,PctLargHouseOccup,PctLess9thGrade,PctNotSpeakEnglWell,PctPersDenseHous,PctPopUnderPov,PctRecentImmig,PctRecImmig10,PctRecImmig5,PctRecImmig8,PctVacantBoarded,PctWOFullPlumb,pctWPubAsst,PopDens,racepctblack,racePctHisp,ViolentCrimesPerPop

The first group is composed by immigrant or illegitime children, living in large house not really graduate , not speaking english, under poverty, with public assistance, on a dense area. This group is near our targeted value.
Black and hispanic

The second group

HousVacant,indianPerCap,LandArea,LemasPctOfficDrugUn,numbUrban,NumIlleg,NumImmig,NumInShelters,NumStreet,NumUnderPov,PctUsePubTrans,population,racePctAsian
The group of workers whose use public transport under poverty with drug problems.
Asian and indian

The third group

AsianPerCap,blackPerCap,HispPerCap,medFamInc,medIncome,MedNumBR,MedRent,OwnOccHiQuart,OwnOccLowQuart,OwnOccMedVal,PctBSorMore,PctOccupMgmtProf,perCapInc,RentHighQ,RentLowQ,RentMedian,whitePerCap
The group of medium people from different race.

The fourth group

agePct12t21,agePct12t29,agePct16t24,agePct65up,FemalePctDiv,householdsize,MalePctDivorce,MalePctNevMarr,MedOwnCostPctInc,MedOwnCostPctIncNoMtg,MedRentPctHousInc,MedYrHousBuilt,PctEmplManu,PctEmplProfServ,PctHousLess3BR,PctImmigRec10,PctImmigRec5,PctImmigRec8,PctImmigRecent,PctNotHSGrad,PctOccupManu,PctUnemployed,PctVacMore6Mos,pctWFarmSelf,PctWorkMom,PctWorkMomYoungKids,pctWRetire,pctWSocSec,PersPerFam,PersPerOccupHous,PersPerOwnOccHous,PersPerRentOccHous,TotalPctDiv
The group of worker manual, immigrant , unemployed, with a big family , in a dense house and area.

The fifth group

PctBornSameState,PctEmploy,PctFam2Par,PctHousOccup,PctHousOwnOcc,PctKids2Par,PctPersOwnOccup,PctSameCity85,PctSameHouse85,PctSameState85,PctSpeakEnglOnly,PctTeen2Par,pctUrban,pctWInvInc,pctWWage,PctYoungKids2Par,racePctWhite
The perfect group , white and living on the same area, speaking in english with two kids, urban.
The white race disturb the idea of this group.