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Type 'q()' to quit R. > y <- c(5.5,3.5,8.5,5,6,6,5.5,5.5,6,6.5,7,8,5.5,5,5.5,7.5,4.5,5.5,8.5,8.5,5.5,9,7,5,5.5,7.5,7.5,6.5,8,6.5,4.5,9,9,6,8.5,4.5,4.5,6,9,6,9,7,7.5,8,5,5.5,7,4.5,6,8.5,2.5,6,6,3,12,6,6,7,3.5,6.5,6,6.5,7,4,5.5,4.5,5.5,6.5,5,5.5,6,4.5,7.5,9,7.5,6,6.5,7,5,6.5,6.5,5.5,6.5,8,4,8,5.5,4.5,8,6,7,4,4.5,7.5,5.5,10.5,7,9,6,6.5,7.5,6,9.5,7.5,5.5,5.5,5,6.5,7.5,6,6,8,4.5,9,4,6.5,8.5,4.5,7.5,4,3.5,6,7,3,4,8.5,5,5.5,7,5.5,6.5,6,5.5,4.5,6,10,6,6.5,6,6,4.5,7.5,12,3.5,8.5,5.5,8.5,5.5,6,7,5.5,8,10.5,7,10,6.5,5.5,7.5,9.5) > x <- c(5.6,4.4,2.4,4.8,3.2,4,4,4.4,6.4,4.4,5.2,4.8,3.2,4.8,4.4,1.6,3.6,3.2,3.2,5.6,6,6.4,3.6,5.6,4.4,3.2,3.6,3.6,3.6,3.6,4,6.4,4.4,3.2,3.6,6.4,4.4,6.4,4.8,4.8,5.6,3.6,4,3.6,4,4.8,5.6,5.6,4,5.6,6.4,3.6,4,2.4,3.2,5.2,4,3.2,2.8,6,3.6,4,4.8,5.2,4,4.4,3.2,3.6,5.2,4.4,3.2,3.6,3.6,6,3.6,4,5.6,4.8,4.8,4.4,5.6,2.4,4.8,3.2,5.6,4.4,4,5.6,4.8,4,5.6,2,4.4,4,3.6,4,6.4,5.2,3.6,4,4,2.8,3.6,3.2,5.6,5.6,3.2,3.6,5.6,5.6,3.2,3.2,3.2,2.8,2.4,3.2,2.4,4.4,5.6,4.4,4.4,4.4,5.6,3.2,8,4.4,3.2,4.4,4,5.6,4.4,3.6,3.6,3.2,4,5.2,5.2,4.8,3.2,5.2,5.6,4.8,5.6,6,5.2,6.4,3.6,3.6,3.6,3.2,2.8,6.4,4.4,3.6,4.4,3.6,5.6,5.2,6.4) > par1 = '0' > 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 -4.0133 -0.9797 -0.3792 1.0873 5.6208 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 6.2451 0.5519 11.316 <2e-16 *** x 0.0419 0.1227 0.342 0.733 --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 1.728 on 157 degrees of freedom Multiple R-squared: 0.0007424, Adjusted R-squared: -0.005622 F-statistic: 0.1166 on 1 and 157 DF, p-value: 0.7332 > postscript(file="/var/wessaorg/rcomp/tmp/19taz1321375352.ps",horizontal=F,onefile=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/wessaorg/rcomp/tmp/2pih61321375352.ps",horizontal=F,onefile=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 -1.553e-15 -2.237e-16 -2.194e-17 1.881e-16 6.644e-16 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 6.245e+00 9.775e-17 6.389e+16 <2e-16 *** x 4.190e-02 2.173e-17 1.928e+15 <2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 3.06e-16 on 157 degrees of freedom Multiple R-squared: 1, Adjusted R-squared: 1 F-statistic: 3.718e+30 on 1 and 157 DF, p-value: < 2.2e-16 > z2 <- as.data.frame(cbind(x,m$fitted.values)) > names(z2) <- list('x','Fitted') > plot(z2,main='Scatterplot, lowess, and regression line') > lines(lowess(z2),col='red') > abline(m2) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/3hxgs1321375352.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > m3 <- lm(m$residuals ~ x) > summary(m3) Call: lm(formula = m$residuals ~ x) Residuals: Min 1Q Median 3Q Max -4.0133 -0.9797 -0.3792 1.0873 5.6208 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -9.988e-17 5.519e-01 0 1 x 2.570e-17 1.227e-01 0 1 Residual standard error: 1.728 on 157 degrees of freedom Multiple R-squared: 1.889e-33, Adjusted R-squared: -0.006369 F-statistic: 2.965e-31 on 1 and 157 DF, p-value: 1 > z3 <- as.data.frame(cbind(x,m$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/wessaorg/rcomp/tmp/4qc231321375352.ps",horizontal=F,onefile=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 -0.115538 -0.031731 0.001792 0.035315 0.152645 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 6.428e+00 3.734e-03 1721 <2e-16 *** m$residuals -7.924e-18 2.175e-03 0 1 --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 0.04709 on 157 degrees of freedom Multiple R-squared: 8.157e-29, Adjusted R-squared: -0.006369 F-statistic: 1.281e-26 on 1 and 157 DF, p-value: 1 > z4 <- as.data.frame(cbind(m$residuals,m$fitted.values)) > names(z4) <- list('Residuals','Fitted') > plot(z4,main='Scatterplot, lowess, and regression line') > lines(lowess(z4),col='red') > abline(m4) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/5lcl31321375352.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > myr <- as.ts(m$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 -3.7365 -1.1314 -0.2045 1.0541 5.6629 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 0.003578 0.136435 0.026 0.9791 Residuals -0.138762 0.079991 -1.735 0.0848 . --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 1.715 on 156 degrees of freedom (2 observations deleted due to missingness) Multiple R-squared: 0.01893, Adjusted R-squared: 0.01264 F-statistic: 3.009 on 1 and 156 DF, p-value: 0.08477 > abline(m5) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/64wtn1321375352.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > hist(m$residuals,main='Residual Histogram',xlab='Residuals') > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/7t6441321375352.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > if (par1 > 0) + { + densityplot(~m$residuals,col='black',main=paste('Density Plot bw = ',par1),bw=par1) + } else { + densityplot(~m$residuals,col='black',main='Density Plot') + } > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/8jzjt1321375352.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > acf(m$residuals,main='Residual Autocorrelation Function') > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/9sush1321375352.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > qqnorm(x) > qqline(x) > grid() > 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,'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/wessaorg/rcomp/tmp/10caot1321375352.tab") > > try(system("convert tmp/19taz1321375352.ps tmp/19taz1321375352.png",intern=TRUE)) character(0) > try(system("convert tmp/2pih61321375352.ps tmp/2pih61321375352.png",intern=TRUE)) character(0) > try(system("convert tmp/3hxgs1321375352.ps tmp/3hxgs1321375352.png",intern=TRUE)) character(0) > try(system("convert tmp/4qc231321375352.ps tmp/4qc231321375352.png",intern=TRUE)) character(0) > try(system("convert tmp/5lcl31321375352.ps tmp/5lcl31321375352.png",intern=TRUE)) character(0) > try(system("convert tmp/64wtn1321375352.ps tmp/64wtn1321375352.png",intern=TRUE)) character(0) > try(system("convert tmp/7t6441321375352.ps tmp/7t6441321375352.png",intern=TRUE)) character(0) > try(system("convert tmp/8jzjt1321375352.ps tmp/8jzjt1321375352.png",intern=TRUE)) character(0) > try(system("convert tmp/9sush1321375352.ps tmp/9sush1321375352.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 2.556 0.423 3.032