R version 2.9.0 (2009-04-17)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(15
+ ,14.4
+ ,13.5
+ ,12.8
+ ,12.3
+ ,12.2
+ ,14.5
+ ,17.2
+ ,18
+ ,18.1
+ ,18
+ ,18.3
+ ,18.7
+ ,18.6
+ ,18.3
+ ,17.9
+ ,17.4
+ ,17.4
+ ,20.1
+ ,23.2
+ ,24.2
+ ,24.2
+ ,23.9
+ ,23.8
+ ,23.8
+ ,23.3
+ ,22.4
+ ,21.5
+ ,20.5
+ ,19.9
+ ,22
+ ,24.9
+ ,25.7
+ ,25.3
+ ,24.4
+ ,23.8
+ ,23.5
+ ,23
+ ,22.2
+ ,21.4
+ ,20.3
+ ,19.5
+ ,21.7
+ ,24.7
+ ,25.3
+ ,24.9
+ ,24.1
+ ,23.4
+ ,23.1
+ ,22.4
+ ,21.3
+ ,20.3
+ ,19.3
+ ,18.7
+ ,21
+ ,24
+ ,24.8
+ ,24.2
+ ,23.3
+ ,22.7
+ ,22.3
+ ,21.8
+ ,21.2
+ ,20.5
+ ,19.7
+ ,19.2
+ ,21.2
+ ,23.9
+ ,24.8
+ ,24.2
+ ,23
+ ,22.2
+ ,21.8
+ ,21.2
+ ,20.5
+ ,19.7
+ ,19
+ ,18.4
+ ,20.7
+ ,24.5
+ ,26
+ ,25.2
+ ,24.1
+ ,23.7
+ ,23.5
+ ,23.1
+ ,22.7
+ ,22.5
+ ,21.7
+ ,20.5
+ ,21.9
+ ,22.9
+ ,21.5
+ ,19
+ ,17
+ ,16.1
+ ,15.9
+ ,15.7
+ ,15.1
+ ,14.8
+ ,14.3
+ ,14.5
+ ,18.9
+ ,21.6
+ ,20.4
+ ,17.9
+ ,15.7
+ ,14.5
+ ,14
+ ,13.9
+ ,14.4
+ ,15.8
+ ,15.6
+ ,14.7
+ ,16.7
+ ,17.9
+ ,18.7
+ ,20.1
+ ,19.5
+ ,19.4
+ ,18.6
+ ,17.8
+ ,17.1
+ ,16.5
+ ,15.5
+ ,14.9
+ ,18.6
+ ,19.1
+ ,18.8
+ ,18.2
+ ,18
+ ,19
+ ,20.7
+ ,21.2
+ ,20.7
+ ,19.6
+ ,18.6
+ ,18.7
+ ,23.8
+ ,24.9
+ ,24.8
+ ,23.8
+ ,22.3
+ ,21.7
+ ,20.7
+ ,19.7
+ ,18.4
+ ,17.4
+ ,17
+ ,18
+ ,23.8
+ ,25.5
+ ,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
+ ,23.2
+ ,21.2)
> par1 = '12'
> #'GNU S' R Code compiled by R2WASP v. 1.0.44 ()
> #Author: Prof. Dr. P. Wessa
> #To cite this work: AUTHOR(S), (YEAR), YOUR SOFTWARE TITLE (vNUMBER) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_YOURPAGE.wasp/
> #Source of accompanying publication: Office for Research, Development, and Education
> #Technical description: Write here your technical program description (don't use hard returns!)
> par1 <- as.numeric(par1)
> (n <- length(x))
[1] 214
> (np <- floor(n / par1))
[1] 17
> 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
      [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13]
 [1,] 15.0 18.7 23.8 23.5 23.1 22.3 21.8 23.5 15.9  14.0  18.6  20.7  20.7
 [2,] 14.4 18.6 23.3 23.0 22.4 21.8 21.2 23.1 15.7  13.9  17.8  21.2  19.7
 [3,] 13.5 18.3 22.4 22.2 21.3 21.2 20.5 22.7 15.1  14.4  17.1  20.7  18.4
 [4,] 12.8 17.9 21.5 21.4 20.3 20.5 19.7 22.5 14.8  15.8  16.5  19.6  17.4
 [5,] 12.3 17.4 20.5 20.3 19.3 19.7 19.0 21.7 14.3  15.6  15.5  18.6  17.0
 [6,] 12.2 17.4 19.9 19.5 18.7 19.2 18.4 20.5 14.5  14.7  14.9  18.7  18.0
 [7,] 14.5 20.1 22.0 21.7 21.0 21.2 20.7 21.9 18.9  16.7  18.6  23.8  23.8
 [8,] 17.2 23.2 24.9 24.7 24.0 23.9 24.5 22.9 21.6  17.9  19.1  24.9  25.5
 [9,] 18.0 24.2 25.7 25.3 24.8 24.8 26.0 21.5 20.4  18.7  18.8  24.8  25.6
[10,] 18.1 24.2 25.3 24.9 24.2 24.2 25.2 19.0 17.9  20.1  18.2  23.8  23.7
[11,] 18.0 23.9 24.4 24.1 23.3 23.0 24.1 17.0 15.7  19.5  18.0  22.3  22.0
[12,] 18.3 23.8 23.8 23.4 22.7 22.2 23.7 16.1 14.5  19.4  19.0  21.7  21.3
      [,14] [,15] [,16] [,17]
 [1,]  20.7  20.5  18.6  17.4
 [2,]  20.4  20.2  18.4  16.8
 [3,]  20.3  19.4  18.6  15.3
 [4,]  20.4  19.2  19.9  14.3
 [5,]  19.8  18.8  19.2  13.4
 [6,]  19.5  18.8  18.4  15.3
 [7,]  23.1  22.6  21.1  22.1
 [8,]  23.5  23.3  20.5  23.7
 [9,]  23.5  23.0  19.1  22.2
[10,]  22.9  21.4  18.1  19.5
[11,]  21.9  19.9  17.0  16.6
[12,]  21.5  18.8  17.1  17.3
> 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
 [1] 15.35833 20.64167 23.12500 22.83333 22.09167 22.00000 22.06667 21.03333
 [9] 16.60833 16.72500 17.67500 21.73333 21.09167 21.45833 20.49167 18.83333
[17] 17.82500
> arr.sd
 [1] 2.423918 2.934267 1.878164 1.846536 1.969983 1.761198 2.551411 2.434724
 [9] 2.488687 2.307350 1.391614 2.221520 3.075256 1.478610 1.687633 1.230176
[17] 3.337153
> arr.range
 [1]  6.1  6.8  5.8  5.8  6.1  5.6  7.6  7.4  7.3  6.2  4.2  6.3  8.6  4.0  4.5
[16]  4.1 10.3
> (lm1 <- lm(arr.sd~arr.mean))

Call:
lm(formula = arr.sd ~ arr.mean)

Coefficients:
(Intercept)     arr.mean  
    3.04344     -0.04309  

> (lnlm1 <- lm(log(arr.sd)~log(arr.mean)))

Call:
lm(formula = log(arr.sd) ~ log(arr.mean))

Coefficients:
  (Intercept)  log(arr.mean)  
       1.6934        -0.3181  

> (lm2 <- lm(arr.range~arr.mean))

Call:
lm(formula = arr.range ~ arr.mean)

Coefficients:
(Intercept)     arr.mean  
    7.50667     -0.06122  

> postscript(file="/var/www/html/rcomp/tmp/15pch1262215563.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.mean,arr.sd,main='Standard Deviation-Mean Plot',xlab='mean',ylab='standard deviation')
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/rcomp/tmp/2t2hg1262215563.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.mean,arr.range,main='Range-Mean Plot',xlab='mean',ylab='range')
> dev.off()
null device 
          1 
> 
> #Note: the /var/www/html/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/www/html/rcomp/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="/var/www/html/rcomp/tmp/3jelx1262215563.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)$coefficients[2,4])
> a<-table.row.end(a)
> a<-table.end(a)
> table.save(a,file="/var/www/html/rcomp/tmp/44idd1262215563.tab") 
> a<-table.start()
> a<-table.row.start(a)
> a<-table.element(a,'Regression: ln S.E.(k) = alpha + beta * ln Mean(k)',2,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'alpha',header=TRUE)
> a<-table.element(a,lnlm1$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="/var/www/html/rcomp/tmp/5ok0w1262215563.tab") 
> try(system("convert tmp/15pch1262215563.ps tmp/15pch1262215563.png",intern=TRUE))
character(0)
> try(system("convert tmp/2t2hg1262215563.ps tmp/2t2hg1262215563.png",intern=TRUE))
character(0)
> 
> 
> proc.time()
   user  system elapsed 
  0.530   0.283   1.157