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Description of Statistical Computation

Author's title

Author*Unverified author*
R Software Modulerwasp_smp.wasp
Title produced by softwareStandard Deviation-Mean Plot
Date of computationSun, 25 Nov 2007 13:04:44 -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/2007/Nov/25/t1196020530be5l452yuw65uef.htm/, Retrieved Sat, 04 May 2024 14:39:13 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=6545, Retrieved Sat, 04 May 2024 14:39:13 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact198

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] [Onder de 25] [2007-11-25 20:04:44] [4a507cbea0acb4f2b617b46f2010fec1] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
18,9
19,1
18,2
17,9
21,4
20,9
20,2
19,4
18,6
19
23,9
24,9
24,8
23,5
22,2
22,1
20,2
19,8
18,9
17,9
17,2
17,5
24,3
25,3
25,2
23,3
22,1
21,5
21
20,5
19,9
20,3
19,6
19,7
22,7
23,7
23,7
23,1
21,9
21,3
20,5
20,2
19,4
19,1
18,7
18,9
22,5
23,3
23,1
21,3
19,8
18,9
19,3
18,6
17,7
20
18,9
18,7
20,8
21,7
20,8

Tables (Output of Computation)





Summary of compuational 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 compuational 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=6545&T=0

[TABLE]
[ROW][C]Summary of compuational 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=6545&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=6545&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 compuational 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
120.22.226697513849116
221.14166666666672.942929379603486.2
321.6251.796018323453817
421.051.830797143819655.8
519.91.555050423035163.8

\begin{tabular}{lllllllll}
\hline
Standard Deviation-Mean Plot \tabularnewline
Section & Mean & Standard Deviation & Range \tabularnewline
1 & 20.2 & 2.22669751384911 & 6 \tabularnewline
2 & 21.1416666666667 & 2.94292937960348 & 6.2 \tabularnewline
3 & 21.625 & 1.79601832345381 & 7 \tabularnewline
4 & 21.05 & 1.83079714381965 & 5.8 \tabularnewline
5 & 19.9 & 1.55505042303516 & 3.8 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=6545&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]20.2[/C][C]2.22669751384911[/C][C]6[/C][/ROW]
[ROW][C]2[/C][C]21.1416666666667[/C][C]2.94292937960348[/C][C]6.2[/C][/ROW]
[ROW][C]3[/C][C]21.625[/C][C]1.79601832345381[/C][C]7[/C][/ROW]
[ROW][C]4[/C][C]21.05[/C][C]1.83079714381965[/C][C]5.8[/C][/ROW]
[ROW][C]5[/C][C]19.9[/C][C]1.55505042303516[/C][C]3.8[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=6545&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=6545&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
120.22.226697513849116
221.14166666666672.942929379603486.2
321.6251.796018323453817
421.051.830797143819655.8
519.91.555050423035163.8






Regression: S.E.(k) = alpha + beta * Mean(k)
alpha-1.84233165709314
beta0.188258069631694
S.D.0.427495614283541
T-STAT0.440374271317858
p-value0.689464871658522

\begin{tabular}{lllllllll}
\hline
Regression: S.E.(k) = alpha + beta * Mean(k) \tabularnewline
alpha & -1.84233165709314 \tabularnewline
beta & 0.188258069631694 \tabularnewline
S.D. & 0.427495614283541 \tabularnewline
T-STAT & 0.440374271317858 \tabularnewline
p-value & 0.689464871658522 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=6545&T=2

[TABLE]
[ROW][C]Regression: S.E.(k) = alpha + beta * Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]-1.84233165709314[/C][/ROW]
[ROW][C]beta[/C][C]0.188258069631694[/C][/ROW]
[ROW][C]S.D.[/C][C]0.427495614283541[/C][/ROW]
[ROW][C]T-STAT[/C][C]0.440374271317858[/C][/ROW]
[ROW][C]p-value[/C][C]0.689464871658522[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=6545&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=6545&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)
alpha-1.84233165709314
beta0.188258069631694
S.D.0.427495614283541
T-STAT0.440374271317858
p-value0.689464871658522






Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha-5.13813378669162
beta1.92521478521097
S.D.3.98784351352323
T-STAT0.482770895769191
p-value0.66229646729297
Lambda-0.925214785210966

\begin{tabular}{lllllllll}
\hline
Regression: ln S.E.(k) = alpha + beta * ln Mean(k) \tabularnewline
alpha & -5.13813378669162 \tabularnewline
beta & 1.92521478521097 \tabularnewline
S.D. & 3.98784351352323 \tabularnewline
T-STAT & 0.482770895769191 \tabularnewline
p-value & 0.66229646729297 \tabularnewline
Lambda & -0.925214785210966 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=6545&T=3

[TABLE]
[ROW][C]Regression: ln S.E.(k) = alpha + beta * ln Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]-5.13813378669162[/C][/ROW]
[ROW][C]beta[/C][C]1.92521478521097[/C][/ROW]
[ROW][C]S.D.[/C][C]3.98784351352323[/C][/ROW]
[ROW][C]T-STAT[/C][C]0.482770895769191[/C][/ROW]
[ROW][C]p-value[/C][C]0.66229646729297[/C][/ROW]
[ROW][C]Lambda[/C][C]-0.925214785210966[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=6545&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=6545&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)
alpha-5.13813378669162
beta1.92521478521097
S.D.3.98784351352323
T-STAT0.482770895769191
p-value0.66229646729297
Lambda-0.925214785210966


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')