R version 2.12.1 (2010-12-16) Copyright (C) 2010 The R Foundation for Statistical Computing ISBN 3-900051-07-0 Platform: i686-pc-linux-gnu (32-bit) R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. Natural language support but running in an English locale R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. > y <- c(-41,55,30,0,17,-61,27,1,-67,80,-70,41,-37,0,7,-50,74,79,56,18,4,15,69,-6,32,57,59,68,-39,8,-349,169,51,43,58) > x <- c(1.6,1.8,5.2,4.1,0.4,2.7,2.4,2.6,2.4,7.2,3.7,8.4,1.5,8.0,0.0,7.1,2.8,8.2,2.3,5.0,5.9,6.2,3.6,1.6,3.2,2.6,1.6,5.8,2.8,1.2,-1.5,7.8,2.5,9.6,7.4) > par2 = 'two.sided' > par1 = 'pearson' > ylab = 'tryglyceride levels' > xlab = 'weight loss reduction' > postscript(file="/var/www/html/freestat/rcomp/tmp/1i9631304592935.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > plot(x,y, xlab=xlab, ylab=ylab) > abline(coef=(lm(y ~ x))$coeff, col='red') > ctp<-cor.test(x, y, use='pair', method='pearson') > legend('bottomright', c('cor =', as.character(round(ctp$estimate, digits=4)))) > dev.off() null device 1 > (sw1<-shapiro.test(x)) Shapiro-Wilk normality test data: x W = 0.948, p-value = 0.09835 > (sw2<-shapiro.test(y)) Shapiro-Wilk normality test data: y W = 0.7641, p-value = 4.337e-06 > (cxy<-cor.test(x, y, method=par1)) Pearson's product-moment correlation data: x and y t = 3.0118, df = 33, p-value = 0.004954 alternative hypothesis: true correlation is not equal to 0 95 percent confidence interval: 0.1550956 0.6907085 sample estimates: cor 0.4643426 > > #Note: the /var/www/html/freestat/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab > load(file="/var/www/html/freestat/rcomp/createtable") > > a<-table.start() > a<-table.row.start(a) > a<-table.element(a,paste('Shapiro Test (', xlab,')',sep=''),3,TRUE) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,'Statistic W',header=TRUE) > a<-table.element(a,'Probability',header=TRUE) > a<-table.element(a,'Link',header=TRUE) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,round(sw1$statistic, digits=4)) > a<-table.element(a,round(sw1$p.value, digits=4)) > a<-table.element(a,hyperlink('http://en.wikipedia.org/wiki/Shapiro%E2%80%93Wilk_test','Shapiro-Wilk Test','Shapiro-Wilk Test')) > a<-table.row.end(a) > a<-table.end(a) > table.save(a,file="/var/www/html/freestat/rcomp/tmp/2wgq51304592935.tab") > a<-table.start() > a<-table.row.start(a) > a<-table.element(a, paste('Shapiro Test (', ylab,')',sep=''),3,TRUE) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,'Statistic W',header=TRUE) > a<-table.element(a,'probability',header=TRUE) > a<-table.element(a,'Link',header=TRUE) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,round(sw2$statistic, digits=4)) > a<-table.element(a,round(sw2$p.value, digits=4)) > a<-table.element(a,hyperlink('http://en.wikipedia.org/wiki/Shapiro%E2%80%93Wilk_test','Shapiro-Wilk Test','Shapiro-Wilk Test')) > a<-table.row.end(a) > a<-table.end(a) > table.save(a,file="/var/www/html/freestat/rcomp/tmp/3e2oo1304592935.tab") > a<-table.start() > a<-table.row.start(a) > a<-table.element(a,'Correlation Test X-Y',5,TRUE) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,'Statistic',header=TRUE) > a<-table.element(a,'Value',header=TRUE) > a<-table.element(a,'probability',header=TRUE) > a<-table.element(a,'Method',header=TRUE) > a<-table.element(a,'alternative',header=TRUE) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,names(cxy$estimate)) > a<-table.element(a,round(cxy$estimate, digits=4)) > a<-table.element(a,round(cxy$p.value, digits=4)) > a<-table.element(a,cxy$method) > a<-table.element(a,cxy$alternative) > a<-table.row.end(a) > a<-table.end(a) > table.save(a,file="/var/www/html/freestat/rcomp/tmp/42ee91304592935.tab") > > try(system("convert tmp/1i9631304592935.ps tmp/1i9631304592935.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 0.554 0.056 0.672