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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 computationFri, 30 Nov 2012 14:18:38 -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/2012/Nov/30/t1354303139kl9wv5vlm3rxfpr.htm/, Retrieved Fri, 03 May 2024 18:26:54 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=195182, Retrieved Fri, 03 May 2024 18:26:54 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact55

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] [] [2012-11-30 19:18:38] [9de610bc675449a09d9ad0dc935d1f26] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
246.24
247.57
247.84
248.27
248.3
248.31
248.31
248.38
248.37
248.41
248.68
248.75
248.75
247.95
248.13
247.86
246.23
245.98
245.98
246.27
246.31
246.3
246.67
246.78
246.78
247.91
247.99
248.6
248.68
248.75
248.75
249.03
249.05
249.57
249.35
249.46
249.46
250.82
254.19
255.18
256.68
256.73
256.73
257.39
257.78
258.67
258.71
258.91
258.91
261.38
262.42
262.77
263.24
262.83
262.83
263.09
263.6
265.68
266.08
266.28
266.28
269.14
270.96
272.97
273.13
274.73
274.73
274.59
275.15
275.16
275.38
275.4

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time2 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 & 2 seconds \tabularnewline
R Server & 'Gertrude Mary Cox' @ cox.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=195182&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]2 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=195182&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=195182&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 time2 seconds
R Server'Gertrude Mary Cox' @ cox.wessa.net






Standard Deviation-Mean Plot
SectionMeanStandard DeviationRange
1248.1191666666670.6719775203671522.50999999999999
2246.9341666666670.9657541408692292.77000000000001
3248.660.7861991420175242.78999999999999
4255.93753.061126129681399.45000000000002
5263.2591666666672.063679231299517.36999999999995
6273.1352.911499145238989.12

\begin{tabular}{lllllllll}
\hline
Standard Deviation-Mean Plot \tabularnewline
Section & Mean & Standard Deviation & Range \tabularnewline
1 & 248.119166666667 & 0.671977520367152 & 2.50999999999999 \tabularnewline
2 & 246.934166666667 & 0.965754140869229 & 2.77000000000001 \tabularnewline
3 & 248.66 & 0.786199142017524 & 2.78999999999999 \tabularnewline
4 & 255.9375 & 3.06112612968139 & 9.45000000000002 \tabularnewline
5 & 263.259166666667 & 2.06367923129951 & 7.36999999999995 \tabularnewline
6 & 273.135 & 2.91149914523898 & 9.12 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=195182&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]248.119166666667[/C][C]0.671977520367152[/C][C]2.50999999999999[/C][/ROW]
[ROW][C]2[/C][C]246.934166666667[/C][C]0.965754140869229[/C][C]2.77000000000001[/C][/ROW]
[ROW][C]3[/C][C]248.66[/C][C]0.786199142017524[/C][C]2.78999999999999[/C][/ROW]
[ROW][C]4[/C][C]255.9375[/C][C]3.06112612968139[/C][C]9.45000000000002[/C][/ROW]
[ROW][C]5[/C][C]263.259166666667[/C][C]2.06367923129951[/C][C]7.36999999999995[/C][/ROW]
[ROW][C]6[/C][C]273.135[/C][C]2.91149914523898[/C][C]9.12[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=195182&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=195182&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
1248.1191666666670.6719775203671522.50999999999999
2246.9341666666670.9657541408692292.77000000000001
3248.660.7861991420175242.78999999999999
4255.93753.061126129681399.45000000000002
5263.2591666666672.063679231299517.36999999999995
6273.1352.911499145238989.12






Regression: S.E.(k) = alpha + beta * Mean(k)
alpha-19.3104636826012
beta0.0822391384400074
S.D.0.031709509843802
T-STAT2.59351654582835
p-value0.0604594609775477

\begin{tabular}{lllllllll}
\hline
Regression: S.E.(k) = alpha + beta * Mean(k) \tabularnewline
alpha & -19.3104636826012 \tabularnewline
beta & 0.0822391384400074 \tabularnewline
S.D. & 0.031709509843802 \tabularnewline
T-STAT & 2.59351654582835 \tabularnewline
p-value & 0.0604594609775477 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=195182&T=2

[TABLE]
[ROW][C]Regression: S.E.(k) = alpha + beta * Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]-19.3104636826012[/C][/ROW]
[ROW][C]beta[/C][C]0.0822391384400074[/C][/ROW]
[ROW][C]S.D.[/C][C]0.031709509843802[/C][/ROW]
[ROW][C]T-STAT[/C][C]2.59351654582835[/C][/ROW]
[ROW][C]p-value[/C][C]0.0604594609775477[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=195182&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=195182&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-19.3104636826012
beta0.0822391384400074
S.D.0.031709509843802
T-STAT2.59351654582835
p-value0.0604594609775477






Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha-75.8484791840518
beta13.7471894868922
S.D.4.8722476188506
T-STAT2.82152931507519
p-value0.0477538795510246
Lambda-12.7471894868922

\begin{tabular}{lllllllll}
\hline
Regression: ln S.E.(k) = alpha + beta * ln Mean(k) \tabularnewline
alpha & -75.8484791840518 \tabularnewline
beta & 13.7471894868922 \tabularnewline
S.D. & 4.8722476188506 \tabularnewline
T-STAT & 2.82152931507519 \tabularnewline
p-value & 0.0477538795510246 \tabularnewline
Lambda & -12.7471894868922 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=195182&T=3

[TABLE]
[ROW][C]Regression: ln S.E.(k) = alpha + beta * ln Mean(k)[/C][/ROW]
[ROW][C]alpha[/C][C]-75.8484791840518[/C][/ROW]
[ROW][C]beta[/C][C]13.7471894868922[/C][/ROW]
[ROW][C]S.D.[/C][C]4.8722476188506[/C][/ROW]
[ROW][C]T-STAT[/C][C]2.82152931507519[/C][/ROW]
[ROW][C]p-value[/C][C]0.0477538795510246[/C][/ROW]
[ROW][C]Lambda[/C][C]-12.7471894868922[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=195182&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=195182&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-75.8484791840518
beta13.7471894868922
S.D.4.8722476188506
T-STAT2.82152931507519
p-value0.0477538795510246
Lambda-12.7471894868922


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')