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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 computationThu, 26 Nov 2009 13:42:55 -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/26/t1259268275ju786iqqp5jgj6m.htm/, Retrieved Sun, 28 Apr 2024 23:18:15 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=60389, Retrieved Sun, 28 Apr 2024 23:18:15 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact119

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Univariate Explorative Data Analysis] [Run Sequence gebo...] [2008-12-12 13:32:37] [76963dc1903f0f612b6153510a3818cf]
- R  D  [Univariate Explorative Data Analysis] [Run Sequence gebo...] [2008-12-17 12:14:40] [76963dc1903f0f612b6153510a3818cf]
-         [Univariate Explorative Data Analysis] [Run Sequence Plot...] [2008-12-22 18:19:51] [1ce0d16c8f4225c977b42c8fa93bc163]
- RMP       [Standard Deviation-Mean Plot] [Identifying Integ...] [2009-11-22 12:50:05] [b98453cac15ba1066b407e146608df68]
-   PD          [Standard Deviation-Mean Plot] [Workshop 8, metho...] [2009-11-26 20:42:55] [e339dd08bcbfc073ac7494f09a949034] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
25.6
23.7
22
21.3
20.7
20.4
20.3
20.4
19.8
19.5
23.1
23.5
23.5
22.9
21.9
21.5
20.5
20.2
19.4
19.2
18.8
18.8
22.6
23.3
23
21.4
19.9
18.8
18.6
18.4
18.6
19.9
19.2
18.4
21.1
20.5
19.1
18.1
17
17.1
17.4
16.8
15.3
14.3
13.4
15.3
22.1
23.7
22.2
19.5
16.6
17.3
19.8
21.2
21.5
20.6
19.1
19.6
23.5
24

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=60389&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=60389&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=60389&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
123.151.919201222731304.3
220.450.1732050807568870.399999999999999
321.4752.117191535974014
422.450.914694848934152
519.8250.6238322424070971.3
620.8752.412985702402734.5
720.7751.826426383223084.2
818.8750.6898067362191621.5
919.81.224744871391592.70000000000000
1017.8250.9844626283748242.1
1115.951.410673597966593.1
1218.6255.0394278775802810.3
1318.92.523225449036745.6
1420.7750.751.7
1521.552.556690569205954.9

\begin{tabular}{lllllllll}
\hline
Standard Deviation-Mean Plot \tabularnewline
Section & Mean & Standard Deviation & Range \tabularnewline
1 & 23.15 & 1.91920122273130 & 4.3 \tabularnewline
2 & 20.45 & 0.173205080756887 & 0.399999999999999 \tabularnewline
3 & 21.475 & 2.11719153597401 & 4 \tabularnewline
4 & 22.45 & 0.91469484893415 & 2 \tabularnewline
5 & 19.825 & 0.623832242407097 & 1.3 \tabularnewline
6 & 20.875 & 2.41298570240273 & 4.5 \tabularnewline
7 & 20.775 & 1.82642638322308 & 4.2 \tabularnewline
8 & 18.875 & 0.689806736219162 & 1.5 \tabularnewline
9 & 19.8 & 1.22474487139159 & 2.70000000000000 \tabularnewline
10 & 17.825 & 0.984462628374824 & 2.1 \tabularnewline
11 & 15.95 & 1.41067359796659 & 3.1 \tabularnewline
12 & 18.625 & 5.03942787758028 & 10.3 \tabularnewline
13 & 18.9 & 2.52322544903674 & 5.6 \tabularnewline
14 & 20.775 & 0.75 & 1.7 \tabularnewline
15 & 21.55 & 2.55669056920595 & 4.9 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=60389&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]23.15[/C][C]1.91920122273130[/C][C]4.3[/C][/ROW]
[ROW][C]2[/C][C]20.45[/C][C]0.173205080756887[/C][C]0.399999999999999[/C][/ROW]
[ROW][C]3[/C][C]21.475[/C][C]2.11719153597401[/C][C]4[/C][/ROW]
[ROW][C]4[/C][C]22.45[/C][C]0.91469484893415[/C][C]2[/C][/ROW]
[ROW][C]5[/C][C]19.825[/C][C]0.623832242407097[/C][C]1.3[/C][/ROW]
[ROW][C]6[/C][C]20.875[/C][C]2.41298570240273[/C][C]4.5[/C][/ROW]
[ROW][C]7[/C][C]20.775[/C][C]1.82642638322308[/C][C]4.2[/C][/ROW]
[ROW][C]8[/C][C]18.875[/C][C]0.689806736219162[/C][C]1.5[/C][/ROW]
[ROW][C]9[/C][C]19.8[/C][C]1.22474487139159[/C][C]2.70000000000000[/C][/ROW]
[ROW][C]10[/C][C]17.825[/C][C]0.984462628374824[/C][C]2.1[/C][/ROW]
[ROW][C]11[/C][C]15.95[/C][C]1.41067359796659[/C][C]3.1[/C][/ROW]
[ROW][C]12[/C][C]18.625[/C][C]5.03942787758028[/C][C]10.3[/C][/ROW]
[ROW][C]13[/C][C]18.9[/C][C]2.52322544903674[/C][C]5.6[/C][/ROW]
[ROW][C]14[/C][C]20.775[/C][C]0.75[/C][C]1.7[/C][/ROW]
[ROW][C]15[/C][C]21.55[/C][C]2.55669056920595[/C][C]4.9[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=60389&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=60389&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
123.151.919201222731304.3
220.450.1732050807568870.399999999999999
321.4752.117191535974014
422.450.914694848934152
519.8250.6238322424070971.3
620.8752.412985702402734.5
720.7751.826426383223084.2
818.8750.6898067362191621.5
919.81.224744871391592.70000000000000
1017.8250.9844626283748242.1
1115.951.410673597966593.1
1218.6255.0394278775802810.3
1318.92.523225449036745.6
1420.7750.751.7
1521.552.556690569205954.9






Regression: S.E.(k) = alpha + beta * Mean(k)
alpha2.22540966644594
beta-0.027263777797825
S.D.0.179309923250436
T-STAT-0.152048349046174
p-value0.881483186071449

\begin{tabular}{lllllllll}
\hline
Regression: S.E.(k) = alpha + beta * Mean(k) \tabularnewline
alpha & 2.22540966644594 \tabularnewline
beta & -0.027263777797825 \tabularnewline
S.D. & 0.179309923250436 \tabularnewline
T-STAT & -0.152048349046174 \tabularnewline
p-value & 0.881483186071449 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=60389&T=2

[TABLE]
[ROW][C]Regression: S.E.(k) = alpha + beta * Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]2.22540966644594[/C][/ROW]
[ROW][C]beta[/C][C]-0.027263777797825[/C][/ROW]
[ROW][C]S.D.[/C][C]0.179309923250436[/C][/ROW]
[ROW][C]T-STAT[/C][C]-0.152048349046174[/C][/ROW]
[ROW][C]p-value[/C][C]0.881483186071449[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=60389&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=60389&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)
alpha2.22540966644594
beta-0.027263777797825
S.D.0.179309923250436
T-STAT-0.152048349046174
p-value0.881483186071449






Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha0.298646209238187
beta-0.0123529412320379
S.D.2.35392987293673
T-STAT-0.00524779492119132
p-value0.995892560911548
Lambda1.01235294123204

\begin{tabular}{lllllllll}
\hline
Regression: ln S.E.(k) = alpha + beta * ln Mean(k) \tabularnewline
alpha & 0.298646209238187 \tabularnewline
beta & -0.0123529412320379 \tabularnewline
S.D. & 2.35392987293673 \tabularnewline
T-STAT & -0.00524779492119132 \tabularnewline
p-value & 0.995892560911548 \tabularnewline
Lambda & 1.01235294123204 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=60389&T=3

[TABLE]
[ROW][C]Regression: ln S.E.(k) = alpha + beta * ln Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]0.298646209238187[/C][/ROW]
[ROW][C]beta[/C][C]-0.0123529412320379[/C][/ROW]
[ROW][C]S.D.[/C][C]2.35392987293673[/C][/ROW]
[ROW][C]T-STAT[/C][C]-0.00524779492119132[/C][/ROW]
[ROW][C]p-value[/C][C]0.995892560911548[/C][/ROW]
[ROW][C]Lambda[/C][C]1.01235294123204[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=60389&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=60389&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)
alpha0.298646209238187
beta-0.0123529412320379
S.D.2.35392987293673
T-STAT-0.00524779492119132
p-value0.995892560911548
Lambda1.01235294123204


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 4 ;
Parameters (R input):
par1 = 4 ;
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')