R version 2.13.0 (2011-04-13)
Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i486-pc-linux-gnu (32-bit)

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> x <- c(21,15,18,11,8,19,4,20,16,14,10,13,14,8,23,11,9,24,5,15,5,19,6,13,11,17,17,5,9,15,17,17,20,12,7,16,7,14,24,15,15,10,14,18,12,9,9,8,18,10,17,14,16,10,19,10,14,10,4,19,9,12,16,11,18,11,24,17,18,9,19,18,12,23,22,14,14,16,23,7,10,12,12,12,17,21,16,11,14,13,9,19,13,19,13,13,13,14,12,22,11,5,18,19,14,15,12,19,15,17,8,10,12,12,20,12,12,14,6,10,18,18,7,18,9,17,22,11,15,17,15,22,9,13,20,14,14,12,20,20,8,17,9,18,22,10,13,15,18,18,12,12,20,12,16,16,18,16,13,17,13,17)
> par2 = '0'
> par1 = '8'
> ylab = 'density'
> xlab = 'value of data series'
> main = 'Histogram and Fitted Normal Density'
> #'GNU S' R Code compiled by R2WASP v. 1.0.44 ()
> #Author: Prof. Dr. P. Wessa
> #To cite this work: AUTHOR(S), (YEAR), YOUR SOFTWARE TITLE (vNUMBER) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_YOURPAGE.wasp/
> #Source of accompanying publication: Office for Research, Development, and Education
> #Technical description: Write here your technical program description (don't use hard returns!)
> library(MASS)
> par1 <- as.numeric(par1)
> if (par2 == '0') par2 = 'Sturges' else par2 <- as.numeric(par2)
> x <- as.ts(x) #otherwise the fitdistr function does not work properly
> r <- fitdistr(x,'normal')
> r
      mean          sd    
  14.1975309    4.5863990 
 ( 0.3603415) ( 0.2547999)
> postscript(file="/var/wessaorg/rcomp/tmp/1bbl11321807205.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> myhist<-hist(x,col=par1,breaks=par2,main=main,ylab=ylab,xlab=xlab,freq=F)
> curve(1/(r$estimate[2]*sqrt(2*pi))*exp(-1/2*((x-r$estimate[1])/r$estimate[2])^2),min(x),max(x),add=T)
> 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,'Parameter',1,TRUE)
> a<-table.element(a,'Estimated Value',1,TRUE)
> a<-table.element(a,'Standard Deviation',1,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'mean',header=TRUE)
> a<-table.element(a,r$estimate[1])
> a<-table.element(a,r$sd[1])
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'standard deviation',header=TRUE)
> a<-table.element(a,r$estimate[2])
> a<-table.element(a,r$sd[2])
> a<-table.row.end(a)
> a<-table.end(a)
> table.save(a,file="/var/wessaorg/rcomp/tmp/2s7jt1321807205.tab") 
> 
> try(system("convert tmp/1bbl11321807205.ps tmp/1bbl11321807205.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  0.518   0.069   0.586