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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 computationSat, 24 Nov 2007 06:09:52 -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/24/t1195909267lzr0aaui60ojm2n.htm/, Retrieved Fri, 03 May 2024 14:21:53 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=6280, Retrieved Fri, 03 May 2024 14:21:53 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywordsWS7SDM
Estimated Impact235

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] [WS7 - SD - Medical] [2007-11-24 13:09:52] [e51d7ab0e549b3dc96ac85a81d9bd259] [Current]
-    D    [Standard Deviation-Mean Plot] [WS7 - SD - Medical] [2008-12-27 11:53:47] [1aad2bd7746abaf3ab17fe0d80878872]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
96,5
97,3
122,0
91,0
107,9
114,6
98,0
95,5
98,7
115,9
110,4
109,5
92,3
102,1
112,8
110,2
98,9
119,0
104,3
98,8
109,4
170,3
118,0
116,9
111,7
116,8
116,1
114,8
110,8
122,8
104,7
86,0
127,2
126,1
114,6
127,8
105,2
113,1
161,0
126,9
117,7
144,9
119,4
107,1
142,8
126,2
126,9
179,2
105,3
114,8
125,4
113,2
134,4
150,0
100,9
101,8
137,7
138,7
135,4
153,8
119,5
123,3
166,4
137,5
142,2
167,0
112,3
120,6
154,9
153,4
156,2
175,8
131,7
130,1
161,1
128,2
140,3
168,2
110,2
126,2

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=6280&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=6280&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=6280&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
1104.7759.833442474997829.7
2112.7520.006885178494373
3114.9511.587493257819015
4130.86666666666722.321711132410788.2
5125.9518.438324711909754.9
6144.09166666666721.372431619573261.2

\begin{tabular}{lllllllll}
\hline
Standard Deviation-Mean Plot \tabularnewline
Section & Mean & Standard Deviation & Range \tabularnewline
1 & 104.775 & 9.8334424749978 & 29.7 \tabularnewline
2 & 112.75 & 20.0068851784943 & 73 \tabularnewline
3 & 114.95 & 11.5874932578190 & 15 \tabularnewline
4 & 130.866666666667 & 22.3217111324107 & 88.2 \tabularnewline
5 & 125.95 & 18.4383247119097 & 54.9 \tabularnewline
6 & 144.091666666667 & 21.3724316195732 & 61.2 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=6280&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]104.775[/C][C]9.8334424749978[/C][C]29.7[/C][/ROW]
[ROW][C]2[/C][C]112.75[/C][C]20.0068851784943[/C][C]73[/C][/ROW]
[ROW][C]3[/C][C]114.95[/C][C]11.5874932578190[/C][C]15[/C][/ROW]
[ROW][C]4[/C][C]130.866666666667[/C][C]22.3217111324107[/C][C]88.2[/C][/ROW]
[ROW][C]5[/C][C]125.95[/C][C]18.4383247119097[/C][C]54.9[/C][/ROW]
[ROW][C]6[/C][C]144.091666666667[/C][C]21.3724316195732[/C][C]61.2[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=6280&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=6280&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
1104.7759.833442474997829.7
2112.7520.006885178494373
3114.9511.587493257819015
4130.86666666666722.321711132410788.2
5125.9518.438324711909754.9
6144.09166666666721.372431619573261.2






Regression: S.E.(k) = alpha + beta * Mean(k)
alpha-16.8434462726121
beta0.279009566635289
S.D.0.121498533911311
T-STAT2.29640274374796
p-value0.0832679725921087

\begin{tabular}{lllllllll}
\hline
Regression: S.E.(k) = alpha + beta * Mean(k) \tabularnewline
alpha & -16.8434462726121 \tabularnewline
beta & 0.279009566635289 \tabularnewline
S.D. & 0.121498533911311 \tabularnewline
T-STAT & 2.29640274374796 \tabularnewline
p-value & 0.0832679725921087 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=6280&T=2

[TABLE]
[ROW][C]Regression: S.E.(k) = alpha + beta * Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]-16.8434462726121[/C][/ROW]
[ROW][C]beta[/C][C]0.279009566635289[/C][/ROW]
[ROW][C]S.D.[/C][C]0.121498533911311[/C][/ROW]
[ROW][C]T-STAT[/C][C]2.29640274374796[/C][/ROW]
[ROW][C]p-value[/C][C]0.0832679725921087[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=6280&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=6280&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-16.8434462726121
beta0.279009566635289
S.D.0.121498533911311
T-STAT2.29640274374796
p-value0.0832679725921087






Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha-8.20184986168246
beta2.29237504902311
S.D.0.971882385143286
T-STAT2.35869595340504
p-value0.077773483316284
Lambda-1.29237504902311

\begin{tabular}{lllllllll}
\hline
Regression: ln S.E.(k) = alpha + beta * ln Mean(k) \tabularnewline
alpha & -8.20184986168246 \tabularnewline
beta & 2.29237504902311 \tabularnewline
S.D. & 0.971882385143286 \tabularnewline
T-STAT & 2.35869595340504 \tabularnewline
p-value & 0.077773483316284 \tabularnewline
Lambda & -1.29237504902311 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=6280&T=3

[TABLE]
[ROW][C]Regression: ln S.E.(k) = alpha + beta * ln Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]-8.20184986168246[/C][/ROW]
[ROW][C]beta[/C][C]2.29237504902311[/C][/ROW]
[ROW][C]S.D.[/C][C]0.971882385143286[/C][/ROW]
[ROW][C]T-STAT[/C][C]2.35869595340504[/C][/ROW]
[ROW][C]p-value[/C][C]0.077773483316284[/C][/ROW]
[ROW][C]Lambda[/C][C]-1.29237504902311[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=6280&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=6280&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-8.20184986168246
beta2.29237504902311
S.D.0.971882385143286
T-STAT2.35869595340504
p-value0.077773483316284
Lambda-1.29237504902311


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')