R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: i686-pc-linux-gnu (32-bit)

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> x <- c(14,15,20,20,20,20,20,20,24,25,26,26,26,30,30,30,34,34,35,35,35,35,35,40,40,40,40,40,40,45,45,45,45,45,45,46,48,50,50,50,50,50,50,52,54,54,54,55,55,55,55,55,55,55,55,55,55,60,60,60,60,60,60,60,60,60,60,60,60,60,65,65,65,66,68,70,70,70,70,71,75,75,75,78,80,80,85,90)
> par1 = '5'
> xlab = 'Grade'
> main = 'Distribution Chart'
> postscript(file="/var/wessaorg/rcomp/tmp/1r1su1385943586.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> par1 <- as.numeric(par1)
> myhist<-hist(x, breaks=par1, col=2, xlab=xlab, main=main)
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/2keww1385943586.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> qqnorm(x)
> qqline(x, col=2)
> dev.off()
null device 
          1 
> postscript(file="/var/wessaorg/rcomp/tmp/3htrx1385943586.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(density(x), xlab=xlab, main=main)
> dev.off()
null device 
          1 
> 
> #Note: the /var/wessaorg/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/wessaorg/rcomp/createtable")
> 
> a<-table.start()
> a<-table.row.start(a)
> a<-table.element(a,'Descriptive Statistics',3,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'mean',header=TRUE)
> a<-table.element(a,signif(mean(x), 6))
> a<-table.element(a,hyperlink('http://www.xycoon.com/arithmetic_mean.htm','formula','click to see the formula'))
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'standard deviation',header=TRUE)
> a<-table.element(a,signif(sd(x), 6))
> a<-table.element(a,hyperlink('http://www.xycoon.com/unbiased1.htm','formula','click to see the formula'))
> a<-table.row.end(a)
> a<-table.end(a)
> table.save(a,file="/var/wessaorg/rcomp/tmp/4y3mh1385943586.tab") 
> 
> try(system("convert tmp/1r1su1385943586.ps tmp/1r1su1385943586.png",intern=TRUE))
character(0)
> try(system("convert tmp/2keww1385943586.ps tmp/2keww1385943586.png",intern=TRUE))
character(0)
> try(system("convert tmp/3htrx1385943586.ps tmp/3htrx1385943586.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  3.007   0.701   3.681