2(x<-¡USArrests[n,])#print()
hc1<-hclust(dist(x),method="complete")
4hc2<-hclust(dist(scale(x)),method="complete")
hc3<-hclust(dist(x),method="ave")
layout(matrix(c(1,1,2,3),nrow=2,byrow=T))
plot(hc1);plot(hc2);plot(hc3)
library(cluster)
clusplot(x,pam(x,2)$clustering)
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