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Description of Statistical Computation

Author's title

Author*Unverified author*
R Software Modulerwasp_bootstrapplot.wasp
Title produced by softwareBlocked Bootstrap Plot - Central Tendency
Date of computationTue, 24 Apr 2012 13:55:15 -0400
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2012/Apr/24/t1335290167segimltf3735ko4.htm/, Retrieved Sun, 17 May 2026 08:17:11 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=164756, Retrieved Sun, 17 May 2026 08:17:11 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact407

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Bootstrap Plot - Central Tendency] [OPG7 OEF1 (3)] [2012-04-24 17:44:06] [aedd9af56bfe2946a9f9da3d899aa64c]
- RMPD    [Blocked Bootstrap Plot - Central Tendency] [OPG7 OEF2] [2012-04-24 17:55:15] [2d897010b3abf24abba169db0d9c5a05] [Current]
- R PD      [Blocked Bootstrap Plot - Central Tendency] [OPG7 OEF2(2)] [2012-04-24 17:56:58] [aedd9af56bfe2946a9f9da3d899aa64c]
-   P         [Blocked Bootstrap Plot - Central Tendency] [OPG7 OEF2(3)] [2012-04-24 17:58:14] [aedd9af56bfe2946a9f9da3d899aa64c]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
67,22
67,31
67,14
67,22
67,17
67,27
67,27
67,27
67,48
67,38
67,22
67,2
67,2
67,19
67,32
67,61
67,85
67,74
67,74
67,61
67,85
67,89
67,97
67,94
67,94
68,07
67,85
67,84
67,89
67,86
67,86
67,89
67,7
68,05
68,18
68,19
68,19
68,27
68,22
68,14
68,36
68,34
68,34
68,24
68,14
68,23
68,09
68,03
68,03
67,89
67,63
67,61
67,41
67,29
67,29
67,49
67,68
68,05
67,7
67,86

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time3 seconds
R Server'Gertrude Mary Cox' @ cox.wessa.net

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input & view raw input (R code)  \tabularnewline
Raw Output & view raw output of R engine  \tabularnewline
Computing time & 3 seconds \tabularnewline
R Server & 'Gertrude Mary Cox' @ cox.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=164756&T=0

[TABLE]
[ROW][C]Summary of computational transaction[/C][/ROW]
[ROW][C]Raw Input[/C][C]view raw input (R code) [/C][/ROW]
[ROW][C]Raw Output[/C][C]view raw output of R engine [/C][/ROW]
[ROW][C]Computing time[/C][C]3 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Gertrude Mary Cox' @ cox.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=164756&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=164756&T=0

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time3 seconds
R Server'Gertrude Mary Cox' @ cox.wessa.net






Estimation Results of Blocked Bootstrap
statisticQ1EstimateQ3S.D.IQR
mean67.65762567.748333333333367.8443750.1402033091709830.186750000000004
median67.6967.8567.890.2116557900681860.200000000000003
midrange67.732567.7567.761250.05678000869809310.0287500000000165

\begin{tabular}{lllllllll}
\hline
Estimation Results of Blocked Bootstrap \tabularnewline
statistic & Q1 & Estimate & Q3 & S.D. & IQR \tabularnewline
mean & 67.657625 & 67.7483333333333 & 67.844375 & 0.140203309170983 & 0.186750000000004 \tabularnewline
median & 67.69 & 67.85 & 67.89 & 0.211655790068186 & 0.200000000000003 \tabularnewline
midrange & 67.7325 & 67.75 & 67.76125 & 0.0567800086980931 & 0.0287500000000165 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=164756&T=1

[TABLE]
[ROW][C]Estimation Results of Blocked Bootstrap[/C][/ROW]
[ROW][C]statistic[/C][C]Q1[/C][C]Estimate[/C][C]Q3[/C][C]S.D.[/C][C]IQR[/C][/ROW]
[ROW][C]mean[/C][C]67.657625[/C][C]67.7483333333333[/C][C]67.844375[/C][C]0.140203309170983[/C][C]0.186750000000004[/C][/ROW]
[ROW][C]median[/C][C]67.69[/C][C]67.85[/C][C]67.89[/C][C]0.211655790068186[/C][C]0.200000000000003[/C][/ROW]
[ROW][C]midrange[/C][C]67.7325[/C][C]67.75[/C][C]67.76125[/C][C]0.0567800086980931[/C][C]0.0287500000000165[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=164756&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=164756&T=1

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

Estimation Results of Blocked Bootstrap
statisticQ1EstimateQ3S.D.IQR
mean67.65762567.748333333333367.8443750.1402033091709830.186750000000004
median67.6967.8567.890.2116557900681860.200000000000003
midrange67.732567.7567.761250.05678000869809310.0287500000000165


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 50 ; par2 = 12 ;
Parameters (R input):
par1 = 50 ; 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')