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Type 'q()' to quit R. > x <- c(132,133.7,127,128.7,127.3,136.7,133.8,137.2,147.4,137.6,123.6,117.4,113.7,106.8,103.3,96.3,96.2,94.7,94.6,95.7,106.7,100.2,94.2,97.6,94.3,98,93.6,86.3,90.7,81.8,87.6,73.8,63.3,59.1,52.9,54.6,52.4,67.5,90.4,126,144.3,167.8,166.2,156,137,129.3,118,114.7,112.8,115.7,103.9,96.9,88.8,93,86.3,82.3,82.4,76.6,72.7,67.5,77.3,73.7,73,78.2,90.7,91.5,86.3,86.8,86.1,77.1,75.7,78.7,71.5,69.6,73.6,78.1,78.3,71.5,68.7,61.2,64.7,64.6,56.3,54.5,49.5,54,59.2,52.4,52.8,47.8,45.2,47.1,42.6,42.1,39.4,39.6) > 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,] 132.0 113.7 94.3 52.4 112.8 77.3 71.5 49.5 [2,] 133.7 106.8 98.0 67.5 115.7 73.7 69.6 54.0 [3,] 127.0 103.3 93.6 90.4 103.9 73.0 73.6 59.2 [4,] 128.7 96.3 86.3 126.0 96.9 78.2 78.1 52.4 [5,] 127.3 96.2 90.7 144.3 88.8 90.7 78.3 52.8 [6,] 136.7 94.7 81.8 167.8 93.0 91.5 71.5 47.8 [7,] 133.8 94.6 87.6 166.2 86.3 86.3 68.7 45.2 [8,] 137.2 95.7 73.8 156.0 82.3 86.8 61.2 47.1 [9,] 147.4 106.7 63.3 137.0 82.4 86.1 64.7 42.6 [10,] 137.6 100.2 59.1 129.3 76.6 77.1 64.6 42.1 [11,] 123.6 94.2 52.9 118.0 72.7 75.7 56.3 39.4 [12,] 117.4 97.6 54.6 114.7 67.5 78.7 54.5 39.6 > 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] 131.86667 100.00000 78.00000 122.46667 89.90833 81.25833 67.71667 [8] 47.64167 > arr.sd [1] 7.776811 6.274190 16.553879 36.777595 15.217601 6.596757 7.709950 [8] 6.191851 > arr.range [1] 30.0 19.5 45.1 115.4 48.2 18.5 23.8 19.8 > (lm1 <- lm(arr.sd~arr.mean)) Call: lm(formula = arr.sd ~ arr.mean) Coefficients: (Intercept) arr.mean -2.1272 0.1671 > (lnlm1 <- lm(log(arr.sd)~log(arr.mean))) Call: lm(formula = log(arr.sd) ~ log(arr.mean)) Coefficients: (Intercept) log(arr.mean) -1.3366 0.8271 > (lm2 <- lm(arr.range~arr.mean)) Call: lm(formula = arr.range ~ arr.mean) Coefficients: (Intercept) arr.mean -12.4874 0.5845 > postscript(file="/var/wessaorg/rcomp/tmp/1ngv21356619647.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/2jof21356619647.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/3inm61356619647.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/4rek21356619647.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/5bmo61356619647.tab") > > try(system("convert tmp/1ngv21356619647.ps tmp/1ngv21356619647.png",intern=TRUE)) character(0) > try(system("convert tmp/2jof21356619647.ps tmp/2jof21356619647.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 1.361 0.179 1.545