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Type 'q()' to quit R. > x <- c(6,6.7,-0.6,5.8,16.4,1.5,5.1,14.7,4.3,1.5,9.1,4.3,5.7,13,14.5,9.7,-4.7,7.3,5.2,-2.5,11.5,4.9,-2.4,-0.3,4.4,7.9,-9.7,-4.1,16.4,-4.9,3.5,3.8,-0.2,3.1,0.7,-2.8,5.9,-5.3,-2.9,6.6,-8.1,1.3,6.9,-7.2,-1.9,4,-5.7,3.9,-7.6,-0.9,7.3,-3.7,-2.5,9.3,1.3,9.5,11.3,-1.7,8,-4.8,1.6,1.9,-0.9,5.5,1.7,-5.4,1.9,0.2,-13.3,-8.2,0.2,5.7,-1.2,-2.8,5.5,-17.3,1.4,-2.2,-8.6,-5,4.1,0.7,-4.2,-2.3,-3.4,-4.2,-14.2,1.6,-4.9,-1.8,-0.5,-2.3,-5.3,-0.2,5.1,-1.5) > par1 = '12' > par1 <- '12' > #'GNU S' R Code compiled by R2WASP v. 1.2.291 () > #Author: root > #To cite this work: Wessa P. (2012), Standard Deviation-Mean Plot (v1.0.6) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_smp.wasp/ > #Source of accompanying publication: Office for Research, Development, and Education > # > par1 <- as.numeric(par1) > (n <- length(x)) [1] 96 > (np <- floor(n / par1)) [1] 8 > 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] [1,] 6.0 5.7 4.4 5.9 -7.6 1.6 -1.2 -3.4 [2,] 6.7 13.0 7.9 -5.3 -0.9 1.9 -2.8 -4.2 [3,] -0.6 14.5 -9.7 -2.9 7.3 -0.9 5.5 -14.2 [4,] 5.8 9.7 -4.1 6.6 -3.7 5.5 -17.3 1.6 [5,] 16.4 -4.7 16.4 -8.1 -2.5 1.7 1.4 -4.9 [6,] 1.5 7.3 -4.9 1.3 9.3 -5.4 -2.2 -1.8 [7,] 5.1 5.2 3.5 6.9 1.3 1.9 -8.6 -0.5 [8,] 14.7 -2.5 3.8 -7.2 9.5 0.2 -5.0 -2.3 [9,] 4.3 11.5 -0.2 -1.9 11.3 -13.3 4.1 -5.3 [10,] 1.5 4.9 3.1 4.0 -1.7 -8.2 0.7 -0.2 [11,] 9.1 -2.4 0.7 -5.7 8.0 0.2 -4.2 5.1 [12,] 4.3 -0.3 -2.8 3.9 -4.8 5.7 -2.3 -1.5 > 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] 6.2333333 5.1583333 1.5083333 -0.2083333 2.1250000 -0.7583333 -2.6583333 [8] -2.6333333 > arr.sd [1] 5.081040 6.447756 6.762256 5.627927 6.562029 5.581537 6.030296 4.664826 > arr.range [1] 17.0 19.2 26.1 15.0 18.9 19.0 22.8 19.3 > (lm1 <- lm(arr.sd~arr.mean)) Call: lm(formula = arr.sd ~ arr.mean) Coefficients: (Intercept) arr.mean 5.78632 0.05329 > (lnlm1 <- lm(log(arr.sd)~log(arr.mean))) Call: lm(formula = log(arr.sd) ~ log(arr.mean)) Coefficients: (Intercept) log(arr.mean) 1.9875 -0.1441 Warning message: In log(arr.mean) : NaNs produced > (lm2 <- lm(arr.range~arr.mean)) Call: lm(formula = arr.range ~ arr.mean) Coefficients: (Intercept) arr.mean 19.9008 -0.2175 > postscript(file="/var/wessaorg/rcomp/tmp/1tvwi1425996381.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/2o09t1425996381.ps",horizontal=F,onefile=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/wessaorg/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab > load(file="/var/wessaorg/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/wessaorg/rcomp/tmp/33wix1425996381.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/wessaorg/rcomp/tmp/43qy41425996381.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/wessaorg/rcomp/tmp/5ndb91425996381.tab") > > try(system("convert tmp/1tvwi1425996381.ps tmp/1tvwi1425996381.png",intern=TRUE)) character(0) > try(system("convert tmp/2o09t1425996381.ps tmp/2o09t1425996381.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 0.902 0.152 1.060