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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 computationMon, 28 Nov 2011 12:21:19 -0500
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2011/Nov/28/t1322500934gb1cfygfqhp4des.htm/, Retrieved Wed, 24 Apr 2024 22:15:25 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=147900, Retrieved Wed, 24 Apr 2024 22:15:25 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywordsKDGP2W83
Estimated Impact78

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] [Opgave 8 oefening...] [2011-11-28 17:21:19] [cc1ece1bb71b9752e72e266b4a37553b] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
117.87
117.74
117.61
117.55
117.06
117.08
117.21
117.58
117.27
117.14
116.52
116.16
114.79
114.97
114.66
114.3
114.48
114.96
115.44
116.38
116.5
116.2
116.37
116.46
115.07
115.03
115.15
114.71
114.67
115.49
114.65
114.92
114.17
112.8
112.28
112.05
111.03
110.4
109.08
107.89
107.26
107.76
107.32
107.15
108.04
106.52
106.62
106.47
105.46
106.13
105.15
105.39
104.57
104.29
104.09
104.51
103.39
102.71
102.62
101.94
101.65
101.86
101.27
101.21
102.15
102.07
102.8
103.39
102.71
102.65
101.12
100.29

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'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 & 1 seconds \tabularnewline
R Server & 'Gertrude Mary Cox' @ cox.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=147900&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]'Gertrude Mary Cox' @ cox.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=147900&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=147900&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'Gertrude Mary Cox' @ cox.wessa.net






Standard Deviation-Mean Plot
SectionMeanStandard DeviationRange
1117.23250.4999477245400041.71000000000001
2115.4591666666670.8628226230158072.2
3114.2491666666671.185330474312263.44
4107.9616666666671.487192799956494.56
5104.18751.292025365638984.19
6101.9308333333330.8773043250707693.09999999999999

\begin{tabular}{lllllllll}
\hline
Standard Deviation-Mean Plot \tabularnewline
Section & Mean & Standard Deviation & Range \tabularnewline
1 & 117.2325 & 0.499947724540004 & 1.71000000000001 \tabularnewline
2 & 115.459166666667 & 0.862822623015807 & 2.2 \tabularnewline
3 & 114.249166666667 & 1.18533047431226 & 3.44 \tabularnewline
4 & 107.961666666667 & 1.48719279995649 & 4.56 \tabularnewline
5 & 104.1875 & 1.29202536563898 & 4.19 \tabularnewline
6 & 101.930833333333 & 0.877304325070769 & 3.09999999999999 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=147900&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]117.2325[/C][C]0.499947724540004[/C][C]1.71000000000001[/C][/ROW]
[ROW][C]2[/C][C]115.459166666667[/C][C]0.862822623015807[/C][C]2.2[/C][/ROW]
[ROW][C]3[/C][C]114.249166666667[/C][C]1.18533047431226[/C][C]3.44[/C][/ROW]
[ROW][C]4[/C][C]107.961666666667[/C][C]1.48719279995649[/C][C]4.56[/C][/ROW]
[ROW][C]5[/C][C]104.1875[/C][C]1.29202536563898[/C][C]4.19[/C][/ROW]
[ROW][C]6[/C][C]101.930833333333[/C][C]0.877304325070769[/C][C]3.09999999999999[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=147900&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=147900&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
1117.23250.4999477245400041.71000000000001
2115.4591666666670.8628226230158072.2
3114.2491666666671.185330474312263.44
4107.9616666666671.487192799956494.56
5104.18751.292025365638984.19
6101.9308333333330.8773043250707693.09999999999999






Regression: S.E.(k) = alpha + beta * Mean(k)
alpha3.91700881037662
beta-0.0261677524783895
S.D.0.0246848272322956
T-STAT-1.06007436196085
p-value0.348877657789756

\begin{tabular}{lllllllll}
\hline
Regression: S.E.(k) = alpha + beta * Mean(k) \tabularnewline
alpha & 3.91700881037662 \tabularnewline
beta & -0.0261677524783895 \tabularnewline
S.D. & 0.0246848272322956 \tabularnewline
T-STAT & -1.06007436196085 \tabularnewline
p-value & 0.348877657789756 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=147900&T=2

[TABLE]
[ROW][C]Regression: S.E.(k) = alpha + beta * Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]3.91700881037662[/C][/ROW]
[ROW][C]beta[/C][C]-0.0261677524783895[/C][/ROW]
[ROW][C]S.D.[/C][C]0.0246848272322956[/C][/ROW]
[ROW][C]T-STAT[/C][C]-1.06007436196085[/C][/ROW]
[ROW][C]p-value[/C][C]0.348877657789756[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=147900&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=147900&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)
alpha3.91700881037662
beta-0.0261677524783895
S.D.0.0246848272322956
T-STAT-1.06007436196085
p-value0.348877657789756






Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha15.5674825648296
beta-3.31706134505354
S.D.2.92961837797625
T-STAT-1.13225031969691
p-value0.320802438336473
Lambda4.31706134505354

\begin{tabular}{lllllllll}
\hline
Regression: ln S.E.(k) = alpha + beta * ln Mean(k) \tabularnewline
alpha & 15.5674825648296 \tabularnewline
beta & -3.31706134505354 \tabularnewline
S.D. & 2.92961837797625 \tabularnewline
T-STAT & -1.13225031969691 \tabularnewline
p-value & 0.320802438336473 \tabularnewline
Lambda & 4.31706134505354 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=147900&T=3

[TABLE]
[ROW][C]Regression: ln S.E.(k) = alpha + beta * ln Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]15.5674825648296[/C][/ROW]
[ROW][C]beta[/C][C]-3.31706134505354[/C][/ROW]
[ROW][C]S.D.[/C][C]2.92961837797625[/C][/ROW]
[ROW][C]T-STAT[/C][C]-1.13225031969691[/C][/ROW]
[ROW][C]p-value[/C][C]0.320802438336473[/C][/ROW]
[ROW][C]Lambda[/C][C]4.31706134505354[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=147900&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=147900&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)
alpha15.5674825648296
beta-3.31706134505354
S.D.2.92961837797625
T-STAT-1.13225031969691
p-value0.320802438336473
Lambda4.31706134505354


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')