R version 2.8.0 (2008-10-20)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(8.4,8.4,8.4,8.6,8.9,8.8,8.3,7.5,7.2,7.4,8.8,9.3,9.3,8.7,8.2,8.3,8.5,8.6,8.5,8.2,8.1,7.9,8.6,8.7,8.7,8.5,8.4,8.5,8.7,8.7,8.6,8.5,8.3,8,8.2,8.1,8.1,8,7.9,7.9,8,8,7.9,8,7.7,7.2,7.5,7.3,7,7,7,7.2,7.3,7.1,6.8,6.4,6.1,6.5,7.7,7.9,7.5,6.9,6.6,6.9,7.7,8,8,7.7,7.3,7.4,8.1,8.3,8.2)
> 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] 73
> (np <- floor(n / par1))
[1] 6
> arr <- array(NA,dim=c(par1,np+1))
> ari <- array(0,dim=par1)
> j <- 0
> for (i in 1:n)
+ {
+ j = j + 1
+ ari[j] = ari[j] + 1
+ arr[j,ari[j]] <- x[i]
+ if (j == par1) j = 0
+ }
> ari
 [1] 7 6 6 6 6 6 6 6 6 6 6 6
> arr
      [,1] [,2] [,3] [,4] [,5] [,6] [,7]
 [1,]  8.4  9.3  8.7  8.1  7.0  7.5  8.2
 [2,]  8.4  8.7  8.5  8.0  7.0  6.9   NA
 [3,]  8.4  8.2  8.4  7.9  7.0  6.6   NA
 [4,]  8.6  8.3  8.5  7.9  7.2  6.9   NA
 [5,]  8.9  8.5  8.7  8.0  7.3  7.7   NA
 [6,]  8.8  8.6  8.7  8.0  7.1  8.0   NA
 [7,]  8.3  8.5  8.6  7.9  6.8  8.0   NA
 [8,]  7.5  8.2  8.5  8.0  6.4  7.7   NA
 [9,]  7.2  8.1  8.3  7.7  6.1  7.3   NA
[10,]  7.4  7.9  8.0  7.2  6.5  7.4   NA
[11,]  8.8  8.6  8.2  7.5  7.7  8.1   NA
[12,]  9.3  8.7  8.1  7.3  7.9  8.3   NA
> arr.sd <- array(NA,dim=par1)
> arr.range <- array(NA,dim=par1)
> arr.iqr <- array(NA,dim=par1)
> for (j in 1:par1)
+ {
+ arr.sd[j] <- sqrt(var(arr[j,],na.rm=TRUE))
+ arr.range[j] <- max(arr[j,],na.rm=TRUE) - min(arr[j,],na.rm=TRUE)
+ arr.iqr[j] <- quantile(arr[j,],0.75,na.rm=TRUE) - quantile(arr[j,],0.25,na.rm=TRUE)
+ }
> overall.sd <- sqrt(var(x))
> overall.range <- max(x) - min(x)
> overall.iqr <- quantile(x,0.75) - quantile(x,0.25)
> postscript(file="/var/www/html/freestat/rcomp/tmp/1t69a1257691588.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.sd,type='b',ylab='S.D.',main='Standard Deviation Plot',xlab='Periodic Index')
> mtext(paste('# blocks = ',np))
> abline(overall.sd,0)
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/freestat/rcomp/tmp/2lpgf1257691588.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.range,type='b',ylab='range',main='Range Plot',xlab='Periodic Index')
> mtext(paste('# blocks = ',np))
> abline(overall.range,0)
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/freestat/rcomp/tmp/3z5451257691588.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> plot(arr.iqr,type='b',ylab='IQR',main='Interquartile Range Plot',xlab='Periodic Index')
> mtext(paste('# blocks = ',np))
> abline(overall.iqr,0)
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/freestat/rcomp/tmp/40vp71257691588.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> z <- data.frame(t(arr))
> names(z) <- c(1:par1)
> (boxplot(z,notch=TRUE,col='grey',xlab='Periodic Index',ylab='Value',main='Notched Box Plots - Periodic Subseries'))
$stats
     [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12]
[1,] 7.00  6.9 6.60  6.9 7.30  7.1 7.90 7.50  6.1   6.5  7.50   7.3
[2,] 7.80  7.0 7.00  7.2 7.70  8.0 7.90 7.50  7.2   7.2  7.70   7.9
[3,] 8.20  8.2 8.05  8.1 8.25  8.3 8.15 7.85  7.5   7.4  8.15   8.2
[4,] 8.55  8.5 8.40  8.5 8.70  8.7 8.50 8.20  8.1   7.9  8.60   8.7
[5,] 9.30  8.7 8.40  8.6 8.90  8.8 8.60 8.50  8.3   8.0  8.80   9.3

$n
 [1] 7 6 6 6 6 6 6 6 6 6 6 6

$conf
         [,1]     [,2]     [,3]     [,4]     [,5]     [,6]    [,7]     [,8]
[1,] 7.752112 7.232452 7.146955 7.261458 7.604968 7.848477 7.76298 7.398477
[2,] 8.647888 9.167548 8.953045 8.938542 8.895032 8.751523 8.53702 8.301523
         [,9]    [,10]    [,11]    [,12]
[1,] 6.919471 6.948477 7.569471 7.683974
[2,] 8.080529 7.851523 8.730529 8.716026

$out
[1] 6.8 6.4

$group
[1] 7 8

$names
 [1] "1"  "2"  "3"  "4"  "5"  "6"  "7"  "8"  "9"  "10" "11" "12"

Warning message:
In bxp(list(stats = c(7, 7.8, 8.2, 8.55, 9.3, 6.9, 7, 8.2, 8.5,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/freestat/rcomp/tmp/5n9z91257691588.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> z <- data.frame(arr)
> names(z) <- c(1:np)
> (boxplot(z,notch=TRUE,col='grey',xlab='Block Index',ylab='Value',main='Notched Box Plots - Sequential Blocks'))
$stats
     [,1] [,2] [,3] [,4] [,5] [,6] [,7]
[1,]  7.2 7.90 8.00  7.2 6.10  6.6  8.2
[2,]  7.9 8.20 8.25  7.6 6.65  7.1  8.2
[3,]  8.4 8.50 8.50  7.9 7.00  7.6  8.2
[4,]  8.8 8.65 8.65  8.0 7.25  8.0  8.2
[5,]  9.3 9.30 8.70  8.1 7.90  8.3  8.2

$n
[1] 12 12 12 12 12 12  1

$conf
         [,1]     [,2]     [,3]     [,4]     [,5]     [,6] [,7]
[1,] 7.989504 8.294752 8.317557 7.717557 6.726336 7.189504  8.2
[2,] 8.810496 8.705248 8.682443 8.082443 7.273664 8.010496  8.2

$out
numeric(0)

$group
numeric(0)

$names
[1] "1" "2" "3" "4" "5" "6" NA 

Warning message:
In bxp(list(stats = c(7.2, 7.9, 8.4, 8.8, 9.3, 7.9, 8.2, 8.5, 8.65,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> postscript(file="/var/www/html/freestat/rcomp/tmp/662gh1257691588.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) 
> z <- data.frame(cbind(arr.sd,arr.range,arr.iqr))
> names(z) <- list('S.D.','Range','IQR')
> (boxplot(z,notch=TRUE,col='grey',ylab='Overall Variability',main='Notched Box Plots'))
$stats
          [,1] [,2]  [,3]
[1,] 0.5009990 1.30 0.525
[2,] 0.6314465 1.65 0.625
[3,] 0.6965791 1.80 0.725
[4,] 0.7626619 2.05 0.975
[5,] 0.7893035 2.30 1.225

$n
[1] 12 12 12

$conf
          [,1]     [,2]      [,3]
[1,] 0.6367309 1.617557 0.5653627
[2,] 0.7564274 1.982443 0.8846373

$out
numeric(0)

$group
numeric(0)

$names
[1] "S.D."  "Range" "IQR"  

Warning message:
In bxp(list(stats = c(0.500999001995014, 0.631446463342268, 0.696579142784952,  :
  some notches went outside hinges ('box'): maybe set notch=FALSE
> dev.off()
null device 
          1 
> 
> system("convert tmp/1t69a1257691588.ps tmp/1t69a1257691588.png")
> system("convert tmp/2lpgf1257691588.ps tmp/2lpgf1257691588.png")
> system("convert tmp/3z5451257691588.ps tmp/3z5451257691588.png")
> system("convert tmp/40vp71257691588.ps tmp/40vp71257691588.png")
> system("convert tmp/5n9z91257691588.ps tmp/5n9z91257691588.png")
> system("convert tmp/662gh1257691588.ps tmp/662gh1257691588.png")
> 
> 
> proc.time()
   user  system elapsed 
  1.615   1.242   1.838