R version 2.9.0 (2009-04-17) Copyright (C) 2009 The R Foundation for Statistical Computing ISBN 3-900051-07-0 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. 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(1.817,1.4,1.7324337,1.59,1.9552,1.33,1.83,1.84,1.98,1.32,1.39,1.34,2.08,1.9,2.88,1.35,1.32,1.13,1.65,2.171569,1.7,2,1.9,1.27,1.35,1.24,1.31,1.38,1.85,1.43,2.18,1.84,2.1,7.151,1.78,2.4116,5.8,2.2732,2.3348,2.9056,1.287,5.5052,2.3368,3.5916,1.18,2.9528,2.265,1.37,6.0754,6.8,3.2674,4.4346,4.654,6.2644,2.425,4.5502,6.3,2.1354,4.5832,1.38,1.518,2.4,2.6258,2.9476,2.723,5.414,5.1436,1.55,2.7976,3.1232,4.7934,1.4212,3.9466,4.2416,5.5176,7.0752,3.8,3.3053333,0.966,2.0568,4.3828,2.36,4.9672,1.8634,2.7,3.2878,1.35,2.231,3.457,5.2,2.7852,1.31,1.453,4.8764,5.6808,2.6524,6.5538,1.41,4.4626,1.7,1.7,5.1942,2.1034,3.6,3.1,2.804,7.02575,5.4266,3.1396,2.5888,3.8918,2.553,3.2952,1.7728,1.31,1.3,5.9356,5.1885714,1.43,6.4768,1.28,6.1208,2.73,4.3464,3.1606,1.115,3.4402,5.2576,1.845,4.9142,1.63,2.03,2.5502,6.685,1.2,2.347,2.03,2.62,5.6052,5.2704,3.7274286) > x <- c(83.5,82.68,82.4,82.782566,81.384,79.67,80.43,82.83,84.11,82,81.95,77.35,83,81.8,82.2,83.98,85.81,82.36,82.3,77.238835,81.9,82.035,82.66,79.6,81.75,78.2,81.415,84.1,82.94,84.04,74,81.345,80.7,43.452,79.574,73.412,43.958,78.868,77.28,64.576,75.5,57.354,67.04,67.358,77.28,50.036,75.84,76.3,53.46,50.492,61.402,50.732,45.822,51.988,76.38,56.118,47.46,81.104,48.998,79.37,80.138,75.2,77.856,73.312,74.684,52.356,59.768,78.14,70.892,57.212,60.134,74.686,60.138,73.516,57.154,47.778,62.204,73.472,85.5,72.278,61.024,72,54.55,69.158,72.1,65.264,76.5,73.988,42.94,46.2,76.63,77.06,76.434,60.796,47.886,76.452,56.066,80.7,65.586,75.91,72.274,43,64.876,52.984,63.716,75.58,55.508,47.328,77.142,78.064,60.274,73.714,73.648,82.56,75.8,73.23,47.262,64.822,75.88,43.87,82.6,48.934,52.5,59.622,75.838,81.4,69.204,53.002,74.774,60.004,71.62,76,67.372,51.432,74.06,81.258,79.52,76.41,63.848,41.86,42.062) > par1 = '0' > #'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$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_YOURPAGE.wasp/ > #Source of accompanying publication: Office for Research, Development, and Education > #Technical description: Write here your technical program description (don't use hard returns!) > par1 <- as.numeric(par1) > library(lattice) > z <- as.data.frame(cbind(x,y)) > m <- lm(y~x) > summary(m) Call: lm(formula = y ~ x) Residuals: Min 1Q Median 3Q Max -2.56648 -0.56183 0.03525 0.43829 2.43090 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 10.904544 0.404572 26.95 <2e-16 *** x -0.113672 0.005735 -19.82 <2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 0.864 on 139 degrees of freedom Multiple R-squared: 0.7386, Adjusted R-squared: 0.7368 F-statistic: 392.8 on 1 and 139 DF, p-value: < 2.2e-16 > postscript(file="/var/www/html/rcomp/tmp/10wor1290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > plot(z,main='Scatterplot, lowess, and regression line') > lines(lowess(z),col='red') > abline(m) > grid() > dev.off() null device 1 > postscript(file="/var/www/html/rcomp/tmp/2bonc1290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > m2 <- lm(m$fitted.values ~ x) > summary(m2) Call: lm(formula = m$fitted.values ~ x) Residuals: Min 1Q Median 3Q Max -5.927e-15 -1.109e-16 7.603e-18 1.229e-16 4.507e-15 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 1.090e+01 3.127e-16 3.487e+16 <2e-16 *** x -1.137e-01 4.434e-18 -2.564e+16 <2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 6.679e-16 on 139 degrees of freedom Multiple R-squared: 1, Adjusted R-squared: 1 F-statistic: 6.574e+32 on 1 and 139 DF, p-value: < 2.2e-16 > z2 <- as.data.frame(cbind(x,m$fitted.values)) > names(z2) <- list('x','Fitted') > plot(z2,main='Scatterplot, lowess, and regression line') > lines(lowess(z2),col='red') > abline(m2) > grid() > dev.off() null device 1 > postscript(file="/var/www/html/rcomp/tmp/3bonc1290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > m3 <- lm(m$residuals ~ x) > summary(m3) Call: lm(formula = m$residuals ~ x) Residuals: Min 1Q Median 3Q Max -2.56648 -0.56183 0.03525 0.43829 2.43090 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 8.139e-17 4.046e-01 2.01e-16 1 x -1.105e-18 5.735e-03 -1.93e-16 1 Residual standard error: 0.864 on 139 degrees of freedom Multiple R-squared: 3.219e-34, Adjusted R-squared: -0.007194 F-statistic: 4.475e-32 on 1 and 139 DF, p-value: 1 > z3 <- as.data.frame(cbind(x,m$residuals)) > names(z3) <- list('x','Residuals') > plot(z3,main='Scatterplot, lowess, and regression line') > lines(lowess(z3),col='red') > abline(m3) > grid() > dev.off() null device 1 > postscript(file="/var/www/html/rcomp/tmp/4lf4f1290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > m4 <- lm(m$fitted.values ~ m$residuals) > summary(m4) Call: lm(formula = m$fitted.values ~ m$residuals) Residuals: Min 1Q Median 3Q Max -1.8664 -1.1684 -0.5307 1.0670 3.1295 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 3.0167 0.1223 24.66 <2e-16 *** m$residuals 0.0000 0.1426 0.00 1 --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 1.452 on 139 degrees of freedom Multiple R-squared: 5.078e-31, Adjusted R-squared: -0.007194 F-statistic: 7.058e-29 on 1 and 139 DF, p-value: 1 > z4 <- as.data.frame(cbind(m$residuals,m$fitted.values)) > names(z4) <- list('Residuals','Fitted') > plot(z4,main='Scatterplot, lowess, and regression line') > lines(lowess(z4),col='red') > abline(m4) > grid() > dev.off() null device 1 > postscript(file="/var/www/html/rcomp/tmp/5eo401290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > myr <- as.ts(m$residuals) > z5 <- as.data.frame(cbind(lag(myr,1),myr)) > names(z5) <- list('Lagged Residuals','Residuals') > plot(z5,main='Lag plot') > m5 <- lm(z5) > summary(m5) Call: lm(formula = z5) Residuals: Min 1Q Median 3Q Max -2.55502 -0.57471 0.04815 0.43978 2.41929 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -0.00341 0.07321 -0.047 0.963 Residuals 0.03060 0.08749 0.350 0.727 Residual standard error: 0.866 on 138 degrees of freedom (2 observations deleted due to missingness) Multiple R-squared: 0.0008855, Adjusted R-squared: -0.006354 F-statistic: 0.1223 on 1 and 138 DF, p-value: 0.7271 > abline(m5) > grid() > dev.off() null device 1 > postscript(file="/var/www/html/rcomp/tmp/6pfl31290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > hist(m$residuals,main='Residual Histogram',xlab='Residuals') > dev.off() null device 1 > postscript(file="/var/www/html/rcomp/tmp/7pfl31290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > if (par1 > 0) + { + densityplot(~m$residuals,col='black',main=paste('Density Plot bw = ',par1),bw=par1) + } else { + densityplot(~m$residuals,col='black',main='Density Plot') + } > dev.off() null device 1 > postscript(file="/var/www/html/rcomp/tmp/8z7251290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > acf(m$residuals,main='Residual Autocorrelation Function') > dev.off() null device 1 > postscript(file="/var/www/html/rcomp/tmp/9z7251290676976.ps",horizontal=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > qqnorm(x) > qqline(x) > grid() > dev.off() null device 1 > > #Note: the /var/www/html/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab > load(file="/var/www/html/rcomp/createtable") > > a<-table.start() > a<-table.row.start(a) > a<-table.element(a,'Simple Linear Regression',5,TRUE) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,'Statistics',1,TRUE) > a<-table.element(a,'Estimate',1,TRUE) > a<-table.element(a,'S.D.',1,TRUE) > a<-table.element(a,'T-STAT (H0: coeff=0)',1,TRUE) > a<-table.element(a,'P-value (two-sided)',1,TRUE) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,'constant term',header=TRUE) > a<-table.element(a,m$coefficients[[1]]) > sd <- sqrt(vcov(m)[1,1]) > a<-table.element(a,sd) > tstat <- m$coefficients[[1]]/sd > a<-table.element(a,tstat) > pval <- 2*(1-pt(abs(tstat),length(x)-2)) > a<-table.element(a,pval) > a<-table.row.end(a) > a<-table.row.start(a) > a<-table.element(a,'slope',header=TRUE) > a<-table.element(a,m$coefficients[[2]]) > sd <- sqrt(vcov(m)[2,2]) > a<-table.element(a,sd) > tstat <- m$coefficients[[2]]/sd > a<-table.element(a,tstat) > pval <- 2*(1-pt(abs(tstat),length(x)-2)) > a<-table.element(a,pval) > a<-table.row.end(a) > a<-table.end(a) > table.save(a,file="/var/www/html/rcomp/tmp/10dy0e1290676976.tab") > > try(system("convert tmp/10wor1290676976.ps tmp/10wor1290676976.png",intern=TRUE)) character(0) > try(system("convert tmp/2bonc1290676976.ps tmp/2bonc1290676976.png",intern=TRUE)) character(0) > try(system("convert tmp/3bonc1290676976.ps tmp/3bonc1290676976.png",intern=TRUE)) character(0) > try(system("convert tmp/4lf4f1290676976.ps tmp/4lf4f1290676976.png",intern=TRUE)) character(0) > try(system("convert tmp/5eo401290676976.ps tmp/5eo401290676976.png",intern=TRUE)) character(0) > try(system("convert tmp/6pfl31290676976.ps tmp/6pfl31290676976.png",intern=TRUE)) character(0) > try(system("convert tmp/7pfl31290676976.ps tmp/7pfl31290676976.png",intern=TRUE)) character(0) > try(system("convert tmp/8z7251290676976.ps tmp/8z7251290676976.png",intern=TRUE)) character(0) > try(system("convert tmp/9z7251290676976.ps tmp/9z7251290676976.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 1.863 1.427 8.133