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*The author of this computation has been verified*
R Software Module: /rwasp_bootstrapplot.wasp (opens new window with default values)
Title produced by software: Blocked Bootstrap Plot - Central Tendency
Date of computation: Fri, 26 Nov 2010 14:36:57 +0000
 
Cite this page as follows:
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c.htm/, Retrieved Fri, 26 Nov 2010 15:35:53 +0100
 
BibTeX entries for LaTeX users:
@Manual{KEY,
    author = {{YOUR NAME}},
    publisher = {Office for Research Development and Education},
    title = {Statistical Computations at FreeStatistics.org, URL http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c.htm/},
    year = {2010},
}
@Manual{R,
    title = {R: A Language and Environment for Statistical Computing},
    author = {{R Development Core Team}},
    organization = {R Foundation for Statistical Computing},
    address = {Vienna, Austria},
    year = {2010},
    note = {{ISBN} 3-900051-07-0},
    url = {http://www.R-project.org},
}
 
Original text written by user:
 
IsPrivate?
No (this computation is public)
 
User-defined keywords:
 
Dataseries X:
» Textbox « » Textfile « » CSV «
14.267 472.071 12.335 16.434 10.132 37.190 27.169 21.389 17.416 9.862 8.326 17.578 26.242 20.290 8.089 24.421 9.155 18.061 14.693 8.034 19.516 33.256 17.737 8.886 12.187 18.837 12.341 21.003 18.421 14.225 10.730 14.558 20.347 16.235 39.199 33.492 79.503 21.210 15.907 16.399 7.887 19.976 23.664 12.518 2.385 20.643 16.756 8.932 36.014 10.815 26.268 8.534 14.107 19.193 9.594 18.053 15.805 9.578 8.321 33.400 11.547 12.677 14.138 10.545 10.982 40.070 7.399 10.250 23.433 15.080 29.558 23.587 2.093 39.654 8.285 8.931 34.526 35.350 6.566 10.244 11.090 8.969 12.206 17.525 12.953 18.466 15.110 12.575 24.394 4.401 31.119 11.201 14.781 38.557 29.500 21.700 10.934 4.893 13.080 4.721 18.021 14.916 13.534 8.747 12.229 28.129 9.647 5.915 9.435 9.280 11.673 7.538 23.025 5.837 13.894 19.563 6.356 9.460 9.300 12.637 7.587 18.662 15.058 92.704 13.784 10.937 15.290 20.969 32.207 14.050 8.048 7.049 22 etc...
 
Output produced by software:


Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time5 seconds
R Server'RServer@AstonUniversity' @ vre.aston.ac.uk


Estimation Results of Blocked Bootstrap
statisticQ1EstimateQ3S.D.IQR
mean20.843180194805223.511425324675325.63029788961043.30609141489264.78711769480519
median13.69713.9914.4520.6784514837500210.755000000000001
midrange237.0605499.525499.525156.589005892367262.4645
 
Charts produced by software:
http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/1gmz31290782211.png (open in new window)
http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/1gmz31290782211.ps (open in new window)


http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/2gmz31290782211.png (open in new window)
http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/2gmz31290782211.ps (open in new window)


http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/3gmz31290782211.png (open in new window)
http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/3gmz31290782211.ps (open in new window)


http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/4gmz31290782211.png (open in new window)
http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/4gmz31290782211.ps (open in new window)


http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/59dy61290782211.png (open in new window)
http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/59dy61290782211.ps (open in new window)


http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/69dy61290782211.png (open in new window)
http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/69dy61290782211.ps (open in new window)


http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/79dy61290782211.png (open in new window)
http://www.freestatistics.org/blog/date/2010/Nov/26/t1290782150umkutwock24j10c/79dy61290782211.ps (open in new window)


 
Parameters (Session):
par1 = 500 ; par2 = 12 ;
 
Parameters (R input):
par1 = 500 ; par2 = 12 ;
 
R code (references can be found in the software module):
par1 <- as.numeric(par1)
par2 <- as.numeric(par2)
if (par1 < 10) par1 = 10
if (par1 > 5000) par1 = 5000
if (par2 < 3) par2 = 3
if (par2 > length(x)) par2 = length(x)
library(lattice)
library(boot)
boot.stat <- function(s)
{
s.mean <- mean(s)
s.median <- median(s)
s.midrange <- (max(s) + min(s)) / 2
c(s.mean, s.median, s.midrange)
}
(r <- tsboot(x, boot.stat, R=par1, l=12, sim='fixed'))
bitmap(file='plot1.png')
plot(r$t[,1],type='p',ylab='simulated values',main='Simulation of Mean')
grid()
dev.off()
bitmap(file='plot2.png')
plot(r$t[,2],type='p',ylab='simulated values',main='Simulation of Median')
grid()
dev.off()
bitmap(file='plot3.png')
plot(r$t[,3],type='p',ylab='simulated values',main='Simulation of Midrange')
grid()
dev.off()
bitmap(file='plot4.png')
densityplot(~r$t[,1],col='black',main='Density Plot',xlab='mean')
dev.off()
bitmap(file='plot5.png')
densityplot(~r$t[,2],col='black',main='Density Plot',xlab='median')
dev.off()
bitmap(file='plot6.png')
densityplot(~r$t[,3],col='black',main='Density Plot',xlab='midrange')
dev.off()
z <- data.frame(cbind(r$t[,1],r$t[,2],r$t[,3]))
colnames(z) <- list('mean','median','midrange')
bitmap(file='plot7.png')
boxplot(z,notch=TRUE,ylab='simulated values',main='Bootstrap Simulation - Central Tendency')
grid()
dev.off()
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Estimation Results of Blocked Bootstrap',6,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'statistic',header=TRUE)
a<-table.element(a,'Q1',header=TRUE)
a<-table.element(a,'Estimate',header=TRUE)
a<-table.element(a,'Q3',header=TRUE)
a<-table.element(a,'S.D.',header=TRUE)
a<-table.element(a,'IQR',header=TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'mean',header=TRUE)
q1 <- quantile(r$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='mytable.tab')
 





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