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Type 'q()' to quit R. > y <- c(38,32,35,33,37,29,31,36,35,38,31,34,35,38,37,33,32,38,38,32,33,31,38,39,32,32,35,37,33,33,28,32,31,37,30,33,31,33,31,33,32,33,32,33,28,35,39,34,38,32,38,30,33,38,32,32,34,34,36,34,28,34,35,35,31,37,35,27,40,37,36,38,39,41,27,30,37,31,31,27,36,38,37,33,34,31,39,34,32,33,36,32,41,28,30,36,35,31,34,36,36,35,37,28,39,32,35,39,35,42,34,33,41,33,34,32,40,40,35,36,37,27,39,38,31,33,32,39,36,33,33,32,37,30,38,29,22,35,35,34,35,34,34,35,23,31,27,36,31,32,39,37,38,39,34,31,32,37,36,32,35,36) > x <- c(41,39,30,31,34,35,39,34,36,37,38,36,38,39,33,32,36,38,39,32,32,31,39,37,39,41,36,33,33,34,31,27,37,34,34,32,29,36,29,35,37,34,38,35,38,37,38,33,36,38,32,32,32,34,32,37,39,29,37,35,30,38,34,31,34,35,36,30,39,35,38,31,34,38,34,39,37,34,28,37,33,37,35,37,32,33,38,33,29,33,31,36,35,32,29,39,37,35,37,32,38,37,36,32,33,40,38,41,36,43,30,31,32,32,37,37,33,34,33,38,33,31,38,37,33,31,39,44,33,35,32,28,40,27,37,32,28,34,30,35,31,32,30,30,31,40,32,36,32,35,38,42,34,35,35,33,36,32,33,34,32,34) > 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 -9.689 -2.198 0.149 2.537 7.924 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 20.67674 2.69117 7.683 1.47e-12 *** x 0.38748 0.07736 5.009 1.44e-06 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 3.313 on 160 degrees of freedom Multiple R-squared: 0.1355, Adjusted R-squared: 0.1301 F-statistic: 25.09 on 1 and 160 DF, p-value: 1.436e-06 > postscript(file="/var/www/rcomp/tmp/1ot8m1322582087.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/www/rcomp/tmp/2iobs1322582087.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 -3.575e-15 -2.032e-15 2.400e-17 1.754e-15 2.421e-14 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 2.068e+01 2.211e-15 9.351e+15 <2e-16 *** x 3.875e-01 6.356e-17 6.096e+15 <2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 2.722e-15 on 160 degrees of freedom Multiple R-squared: 1, Adjusted R-squared: 1 F-statistic: 3.716e+31 on 1 and 160 DF, p-value: < 2.2e-16 > z2 <- as.data.frame(cbind(x,m$fitted.values)) > names(z2) <- list('x','Fitted') > plot(z2,main='Scatterplot, lowess, and regression line') > lines(lowess(z2),col='red') > abline(m2) > grid() > dev.off() null device 1 > postscript(file="/var/www/rcomp/tmp/3a7v41322582087.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > m3 <- lm(m$residuals ~ x) > summary(m3) Call: lm(formula = m$residuals ~ x) Residuals: Min 1Q Median 3Q Max -9.689 -2.198 0.149 2.537 7.924 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -3.667e-16 2.691e+00 0 1 x 1.018e-17 7.736e-02 0 1 Residual standard error: 3.313 on 160 degrees of freedom Multiple R-squared: 1.563e-33, Adjusted R-squared: -0.00625 F-statistic: 2.5e-31 on 1 and 160 DF, p-value: 1 > z3 <- as.data.frame(cbind(x,m$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/rcomp/tmp/4uacq1322582087.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 -2.9539 -1.0165 -0.2416 0.9209 3.6332 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 3.409e+01 1.031e-01 330.8 <2e-16 *** m$residuals 2.763e-17 3.130e-02 0.0 1 --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 1.312 on 160 degrees of freedom Multiple R-squared: 2.402e-29, Adjusted R-squared: -0.00625 F-statistic: 3.843e-27 on 1 and 160 DF, p-value: 1 > z4 <- as.data.frame(cbind(m$residuals,m$fitted.values)) > names(z4) <- list('Residuals','Fitted') > plot(z4,main='Scatterplot, lowess, and regression line') > lines(lowess(z4),col='red') > abline(m4) > grid() > dev.off() null device 1 > postscript(file="/var/www/rcomp/tmp/5fuvv1322582087.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > myr <- as.ts(m$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 -9.6687 -2.3065 0.1928 2.5106 7.9450 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -0.009421 0.261593 -0.036 0.971 Residuals -0.037283 0.079308 -0.470 0.639 Residual standard error: 3.319 on 159 degrees of freedom (2 observations deleted due to missingness) Multiple R-squared: 0.001388, Adjusted R-squared: -0.004893 F-statistic: 0.221 on 1 and 159 DF, p-value: 0.6389 > abline(m5) > grid() > dev.off() null device 1 > postscript(file="/var/www/rcomp/tmp/6inj81322582087.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > hist(m$residuals,main='Residual Histogram',xlab='Residuals') > dev.off() null device 1 > postscript(file="/var/www/rcomp/tmp/7je8w1322582087.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > if (par1 > 0) + { + densityplot(~m$residuals,col='black',main=paste('Density Plot bw = ',par1),bw=par1) + } else { + densityplot(~m$residuals,col='black',main='Density Plot') + } > dev.off() null device 1 > postscript(file="/var/www/rcomp/tmp/8mkra1322582087.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > acf(m$residuals,main='Residual Autocorrelation Function') > dev.off() null device 1 > postscript(file="/var/www/rcomp/tmp/9e0xw1322582087.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/www/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab > load(file="/var/www/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/rcomp/tmp/10p8pz1322582087.tab") > > try(system("convert tmp/1ot8m1322582087.ps tmp/1ot8m1322582087.png",intern=TRUE)) character(0) > try(system("convert tmp/2iobs1322582087.ps tmp/2iobs1322582087.png",intern=TRUE)) character(0) > try(system("convert tmp/3a7v41322582087.ps tmp/3a7v41322582087.png",intern=TRUE)) character(0) > try(system("convert tmp/4uacq1322582087.ps tmp/4uacq1322582087.png",intern=TRUE)) character(0) > try(system("convert tmp/5fuvv1322582087.ps tmp/5fuvv1322582087.png",intern=TRUE)) character(0) > try(system("convert tmp/6inj81322582087.ps tmp/6inj81322582087.png",intern=TRUE)) character(0) > try(system("convert tmp/7je8w1322582087.ps tmp/7je8w1322582087.png",intern=TRUE)) character(0) > try(system("convert tmp/8mkra1322582087.ps tmp/8mkra1322582087.png",intern=TRUE)) character(0) > try(system("convert tmp/9e0xw1322582087.ps tmp/9e0xw1322582087.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 4.040 0.320 4.356