R version 2.9.0 (2009-04-17)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(103.6,103.5,110.9,115.8,117.8,121.1,128.7,112.7,111.3,116.2,109.8,137.9,98.7,100.5,128.7,98.7,115,121,125.9,117.3,115,113.8,115.7,145.5,101.7,106.9,116.4,114.6,122.5,120.4,116.5,117,114.3,111.5,117.8,141.5,102.6,103.8,119.8,113.6,121.8,123.9,122.7,120,111.6,117.6,121.3,143.7,107.1,107.7,126.4,111.5,127.9,124.9,122,124.9,113.9,120.8,123.3,143.5,107.1,106.5,114.6,122.2,120.2,123.1,127.1,118.5,116.1,120.6,115.7,146.5,108,106.6,122.2,115.8,115.6,124.5,121.7,118.7,113.7,113.4,115.1,143.9,101,103.4,121.5,111.9,117.4,124.3,122,119.7,115,112.2,115.3,142.6,104.1,105.3,124.4,113.9,124.8,131.8,125.6,125,119.7,116.1,120,148.1,109.2,109.4,135.1,114.9,129,138.5,125.6,130.4,120.3,126.2,127.6,150.9,114.6,118.6,131.4,124.5,136.8,136.8,136.6,131,125.8,129.4,124.8,157.1,116.6,114.2,128.4,127.3,133.5,137.2,137.7,131.2,127.7,133.9,124.3,160.6)
> par1 = '50'
> #'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!)
> par1 <- as.numeric(par1)
> if (par1 < 10) par1 = 10
> if (par1 > 5000) par1 = 5000
> library(lattice)
> library(boot)

Attaching package: 'boot'


	The following object(s) are masked from package:lattice :

	 melanoma 

> boot.stat <- function(s,i)
+ {
+ s.mean <- mean(s[i])
+ s.median <- median(s[i])
+ s.midrange <- (max(s[i]) + min(s[i])) / 2
+ c(s.mean, s.median, s.midrange)
+ }
> (r <- boot(x,boot.stat, R=par1, stype='i'))

ORDINARY NONPARAMETRIC BOOTSTRAP


Call:
boot(data = x, statistic = boot.stat, R = par1, stype = "i")


Bootstrap Statistics :
    original     bias    std. error
t1* 121.1257  0.2422361    1.036158
t2* 120.1000  0.0090000    1.020339
t3* 129.6500 -0.7520000    1.791447
> postscript(file="/var/www/html/rcomp/tmp/1bldj1291667474.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(r$t[,1],type='p',ylab='simulated values',main='Simulation of Mean')
> grid()
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/2bldj1291667474.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(r$t[,2],type='p',ylab='simulated values',main='Simulation of Median')
> grid()
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/3mccl1291667474.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(r$t[,3],type='p',ylab='simulated values',main='Simulation of Midrange')
> grid()
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/4mccl1291667474.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> densityplot(~r$t[,1],col='black',main='Density Plot',xlab='mean')
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/5mccl1291667474.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> densityplot(~r$t[,2],col='black',main='Density Plot',xlab='median')
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/6e3co1291667474.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> densityplot(~r$t[,3],col='black',main='Density Plot',xlab='midrange')
> dev.off()
null device 
          1 
> z <- data.frame(cbind(r$t[,1],r$t[,2],r$t[,3]))
> colnames(z) <- list('mean','median','midrange')
> postscript(file="/var/www/html/rcomp/tmp/7e3co1291667474.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> boxplot(z,notch=TRUE,ylab='simulated values',main='Bootstrap Simulation - Central Tendency')
Warning message:
In bxp(list(stats = c(119.776388888889, 120.877083333333, 121.389930555556,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> grid()
> dev.off()
null device 
          1 
> 
> #Note: the /var/www/html/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/www/html/rcomp/createtable")
> 
> a<-table.start()
> a<-table.row.start(a)
> a<-table.element(a,'Estimation Results of Bootstrap',6,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'statistic',header=TRUE)
> a<-table.element(a,'Q1',header=TRUE)
> a<-table.element(a,'Estimate',header=TRUE)
> a<-table.element(a,'Q3',header=TRUE)
> a<-table.element(a,'S.D.',header=TRUE)
> a<-table.element(a,'IQR',header=TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'mean',header=TRUE)
> q1 <- quantile(r$t[,1],0.25)[[1]]
> q3 <- quantile(r$t[,1],0.75)[[1]]
> a<-table.element(a,q1)
> a<-table.element(a,r$t0[1])
> a<-table.element(a,q3)
> a<-table.element(a,sqrt(var(r$t[,1])))
> a<-table.element(a,q3-q1)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'median',header=TRUE)
> q1 <- quantile(r$t[,2],0.25)[[1]]
> q3 <- quantile(r$t[,2],0.75)[[1]]
> a<-table.element(a,q1)
> a<-table.element(a,r$t0[2])
> a<-table.element(a,q3)
> a<-table.element(a,sqrt(var(r$t[,2])))
> a<-table.element(a,q3-q1)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'midrange',header=TRUE)
> q1 <- quantile(r$t[,3],0.25)[[1]]
> q3 <- quantile(r$t[,3],0.75)[[1]]
> a<-table.element(a,q1)
> a<-table.element(a,r$t0[3])
> a<-table.element(a,q3)
> a<-table.element(a,sqrt(var(r$t[,3])))
> a<-table.element(a,q3-q1)
> a<-table.row.end(a)
> a<-table.end(a)
> table.save(a,file="/var/www/html/rcomp/tmp/8l49i1291667474.tab") 
> 
> try(system("convert tmp/1bldj1291667474.ps tmp/1bldj1291667474.png",intern=TRUE))
character(0)
> try(system("convert tmp/2bldj1291667474.ps tmp/2bldj1291667474.png",intern=TRUE))
character(0)
> try(system("convert tmp/3mccl1291667474.ps tmp/3mccl1291667474.png",intern=TRUE))
character(0)
> try(system("convert tmp/4mccl1291667474.ps tmp/4mccl1291667474.png",intern=TRUE))
character(0)
> try(system("convert tmp/5mccl1291667474.ps tmp/5mccl1291667474.png",intern=TRUE))
character(0)
> try(system("convert tmp/6e3co1291667474.ps tmp/6e3co1291667474.png",intern=TRUE))
character(0)
> try(system("convert tmp/7e3co1291667474.ps tmp/7e3co1291667474.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  1.717   1.117  10.226