This is a reply to Luke Spadavecchia's question about hist densities.
If you want to construct a histogram where the bar heights are the
percentage of observations in the intervals you can use this code:
x<-rnorm(n=5000,mean=1.5,sd=0.25)
h<-hist(x)
h$density<-h$counts/sum(h$counts)
plot(h,freq=F,ylab="Percentage")
Sarah Hardy
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