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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_smp.wasp
Title produced by softwareStandard Deviation-Mean Plot
Date of computationSat, 28 Nov 2009 06:07:49 -0700
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2009/Nov/28/t1259413800lcin49jz8iuma5g.htm/, Retrieved Fri, 03 May 2024 13:53:18 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=61458, Retrieved Fri, 03 May 2024 13:53:18 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact130

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Standard Deviation-Mean Plot] [Heteroskedasticiteit] [2009-11-28 13:07:49] [762da55b2e2304daaed24a7cc507d14d] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
611
613
611
594
595
591
589
584
573
567
569
621
629
628
612
595
597
593
590
580
574
573
573
620
626
620
588
566
557
561
549
532
526
511
499
555
565
542
527
510
514
517
508
493
490
469
478
528
534
518
506
502
516
528
533
536
537
524
536
587

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'Gwilym Jenkins' @ 72.249.127.135

\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 & 1 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=61458&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]1 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Gwilym Jenkins' @ 72.249.127.135[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=61458&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=61458&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 time1 seconds
R Server'Gwilym Jenkins' @ 72.249.127.135






Standard Deviation-Mean Plot
SectionMeanStandard DeviationRange
1593.16666666666718.064698539785654
259720.841392380636156
3557.539.2185021270689127
4511.7527.116331878509296
5529.7521.604397700468385

\begin{tabular}{lllllllll}
\hline
Standard Deviation-Mean Plot \tabularnewline
Section & Mean & Standard Deviation & Range \tabularnewline
1 & 593.166666666667 & 18.0646985397856 & 54 \tabularnewline
2 & 597 & 20.8413923806361 & 56 \tabularnewline
3 & 557.5 & 39.2185021270689 & 127 \tabularnewline
4 & 511.75 & 27.1163318785092 & 96 \tabularnewline
5 & 529.75 & 21.6043977004683 & 85 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=61458&T=1

[TABLE]
[ROW][C]Standard Deviation-Mean Plot[/C][/ROW]
[ROW][C]Section[/C][C]Mean[/C][C]Standard Deviation[/C][C]Range[/C][/ROW]
[ROW][C]1[/C][C]593.166666666667[/C][C]18.0646985397856[/C][C]54[/C][/ROW]
[ROW][C]2[/C][C]597[/C][C]20.8413923806361[/C][C]56[/C][/ROW]
[ROW][C]3[/C][C]557.5[/C][C]39.2185021270689[/C][C]127[/C][/ROW]
[ROW][C]4[/C][C]511.75[/C][C]27.1163318785092[/C][C]96[/C][/ROW]
[ROW][C]5[/C][C]529.75[/C][C]21.6043977004683[/C][C]85[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=61458&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=61458&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:

Standard Deviation-Mean Plot
SectionMeanStandard DeviationRange
1593.16666666666718.064698539785654
259720.841392380636156
3557.539.2185021270689127
4511.7527.116331878509296
5529.7521.604397700468385






Regression: S.E.(k) = alpha + beta * Mean(k)
alpha66.0030816747265
beta-0.0728425763061241
S.D.0.121610427235415
T-STAT-0.598982981657605
p-value0.591397418959929

\begin{tabular}{lllllllll}
\hline
Regression: S.E.(k) = alpha + beta * Mean(k) \tabularnewline
alpha & 66.0030816747265 \tabularnewline
beta & -0.0728425763061241 \tabularnewline
S.D. & 0.121610427235415 \tabularnewline
T-STAT & -0.598982981657605 \tabularnewline
p-value & 0.591397418959929 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=61458&T=2

[TABLE]
[ROW][C]Regression: S.E.(k) = alpha + beta * Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]66.0030816747265[/C][/ROW]
[ROW][C]beta[/C][C]-0.0728425763061241[/C][/ROW]
[ROW][C]S.D.[/C][C]0.121610427235415[/C][/ROW]
[ROW][C]T-STAT[/C][C]-0.598982981657605[/C][/ROW]
[ROW][C]p-value[/C][C]0.591397418959929[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=61458&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=61458&T=2

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


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

Regression: S.E.(k) = alpha + beta * Mean(k)
alpha66.0030816747265
beta-0.0728425763061241
S.D.0.121610427235415
T-STAT-0.598982981657605
p-value0.591397418959929






Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha14.2411133758278
beta-1.74724987902328
S.D.2.36586256056286
T-STAT-0.738525520522034
p-value0.513725040665512
Lambda2.74724987902328

\begin{tabular}{lllllllll}
\hline
Regression: ln S.E.(k) = alpha + beta * ln Mean(k) \tabularnewline
alpha & 14.2411133758278 \tabularnewline
beta & -1.74724987902328 \tabularnewline
S.D. & 2.36586256056286 \tabularnewline
T-STAT & -0.738525520522034 \tabularnewline
p-value & 0.513725040665512 \tabularnewline
Lambda & 2.74724987902328 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=61458&T=3

[TABLE]
[ROW][C]Regression: ln S.E.(k) = alpha + beta * ln Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]14.2411133758278[/C][/ROW]
[ROW][C]beta[/C][C]-1.74724987902328[/C][/ROW]
[ROW][C]S.D.[/C][C]2.36586256056286[/C][/ROW]
[ROW][C]T-STAT[/C][C]-0.738525520522034[/C][/ROW]
[ROW][C]p-value[/C][C]0.513725040665512[/C][/ROW]
[ROW][C]Lambda[/C][C]2.74724987902328[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=61458&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=61458&T=3

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


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

Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha14.2411133758278
beta-1.74724987902328
S.D.2.36586256056286
T-STAT-0.738525520522034
p-value0.513725040665512
Lambda2.74724987902328


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 12 ;
Parameters (R input):
par1 = 12 ;
R code (references can be found in the software module):
par1 <- as.numeric(par1)
(n <- length(x))
(np <- floor(n / par1))
arr <- array(NA,dim=c(par1,np))
j <- 0
k <- 1
for (i in 1:(np*par1))
{
j = j + 1
arr[j,k] <- x[i]
if (j == par1) {
j = 0
k=k+1
}
}
arr
arr.mean <- array(NA,dim=np)
arr.sd <- array(NA,dim=np)
arr.range <- array(NA,dim=np)
for (j in 1:np)
{
arr.mean[j] <- mean(arr[,j],na.rm=TRUE)
arr.sd[j] <- sd(arr[,j],na.rm=TRUE)
arr.range[j] <- max(arr[,j],na.rm=TRUE) - min(arr[,j],na.rm=TRUE)
}
arr.mean
arr.sd
arr.range
(lm1 <- lm(arr.sd~arr.mean))
(lnlm1 <- lm(log(arr.sd)~log(arr.mean)))
(lm2 <- lm(arr.range~arr.mean))
bitmap(file='test1.png')
plot(arr.mean,arr.sd,main='Standard Deviation-Mean Plot',xlab='mean',ylab='standard deviation')
dev.off()
bitmap(file='test2.png')
plot(arr.mean,arr.range,main='Range-Mean Plot',xlab='mean',ylab='range')
dev.off()
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Standard Deviation-Mean Plot',4,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Section',header=TRUE)
a<-table.element(a,'Mean',header=TRUE)
a<-table.element(a,'Standard Deviation',header=TRUE)
a<-table.element(a,'Range',header=TRUE)
a<-table.row.end(a)
for (j in 1:np) {
a<-table.row.start(a)
a<-table.element(a,j,header=TRUE)
a<-table.element(a,arr.mean[j])
a<-table.element(a,arr.sd[j] )
a<-table.element(a,arr.range[j] )
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable.tab')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Regression: S.E.(k) = alpha + beta * Mean(k)',2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'alpha',header=TRUE)
a<-table.element(a,lm1$coefficients[[1]])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'beta',header=TRUE)
a<-table.element(a,lm1$coefficients[[2]])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'S.D.',header=TRUE)
a<-table.element(a,summary(lm1)$coefficients[2,2])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'T-STAT',header=TRUE)
a<-table.element(a,summary(lm1)$coefficients[2,3])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'p-value',header=TRUE)
a<-table.element(a,summary(lm1)$coefficients[2,4])
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable1.tab')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Regression: ln S.E.(k) = alpha + beta * ln Mean(k)',2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'alpha',header=TRUE)
a<-table.element(a,lnlm1$coefficients[[1]])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'beta',header=TRUE)
a<-table.element(a,lnlm1$coefficients[[2]])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'S.D.',header=TRUE)
a<-table.element(a,summary(lnlm1)$coefficients[2,2])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'T-STAT',header=TRUE)
a<-table.element(a,summary(lnlm1)$coefficients[2,3])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'p-value',header=TRUE)
a<-table.element(a,summary(lnlm1)$coefficients[2,4])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Lambda',header=TRUE)
a<-table.element(a,1-lnlm1$coefficients[[2]])
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable2.tab')