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Type 'q()' to quit R. > y <- c(68,56,30,70,29,43,66,22,52,34,87,107,57,89,41,122,75,45,40,86,68,76,48,104,83,63,40,83,56,71,93,72,107,75,72,62,90,40,18,75,55,63,55,47,23,69,66,84,73,70,42,7,95,61,32,56,108,71,78,69,85,47,50,76,56,21,56,68,66,52,65,51,72,50,75,81,75,61,62,61,55,60,79,32,27,59,82,71,32,80,36,76,57,73,71,60,67,56,123,65,87,62,37,64,17,28,48,64,43,60,87,75,0,54,30,47,49,0,29,9,78,90,50,24,21,71,102,83,89,83,104,60,48,71,81,50,82,45,67,59,12,57,62,78,73,89,51,84,0,0,0,0,0,0,34,55,0,0,0,13,4,31,0,19) > x <- c(22,16,22,21,14,13,18,18,15,16,25,32,20,28,23,35,20,22,15,23,23,22,14,26,24,18,15,23,17,22,25,28,30,20,20,20,26,16,8,20,20,25,16,18,17,22,26,24,24,20,12,4,26,18,11,16,29,20,23,20,27,18,27,22,18,10,15,23,20,15,20,16,20,20,22,24,20,19,18,21,18,25,21,23,8,20,22,19,22,23,20,21,19,20,20,16,20,19,33,19,27,21,20,19,12,17,18,20,16,20,23,26,1,20,11,22,19,0,16,8,23,26,18,13,8,19,29,28,26,27,30,17,16,19,24,16,22,18,21,22,9,21,21,21,25,25,16,25,0,0,0,0,0,0,16,27,0,0,0,5,1,23,0,12) > 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 -40.270 -4.941 4.159 8.341 22.777 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -5.0328 2.6548 -1.896 0.0598 . x 3.3175 0.1332 24.900 <2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 12.63 on 162 degrees of freedom Multiple R-squared: 0.7928, Adjusted R-squared: 0.7916 F-statistic: 620 on 1 and 162 DF, p-value: < 2.2e-16 > postscript(file="/var/wessaorg/rcomp/tmp/1i53b1321355166.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/2txuf1321355166.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 -1.289e-14 -1.250e-15 -2.600e-16 3.347e-15 5.559e-14 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -5.033e+00 1.368e-15 -3.679e+15 <2e-16 *** x 3.318e+00 6.865e-17 4.833e+16 <2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 6.507e-15 on 162 degrees of freedom Multiple R-squared: 1, Adjusted R-squared: 1 F-statistic: 2.336e+33 on 1 and 162 DF, p-value: < 2.2e-16 > z2 <- as.data.frame(cbind(x,m$fitted.values)) > names(z2) <- list('x','Fitted') > plot(z2,main='Scatterplot, lowess, and regression line') > lines(lowess(z2),col='red') > abline(m2) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/37m221321355166.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > m3 <- lm(m$residuals ~ x) > summary(m3) Call: lm(formula = m$residuals ~ x) Residuals: Min 1Q Median 3Q Max -40.270 -4.941 4.159 8.341 22.777 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -1.864e-17 2.655e+00 0 1 x -7.613e-18 1.332e-01 0 1 Residual standard error: 12.63 on 162 degrees of freedom Multiple R-squared: 3.167e-34, Adjusted R-squared: -0.006173 F-statistic: 5.13e-32 on 1 and 162 DF, p-value: 1 > z3 <- as.data.frame(cbind(x,m$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/40nud1321355166.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 -61.374 -8.294 4.976 14.929 54.739 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 5.634e+01 1.929e+00 29.2 <2e-16 *** m$residuals 3.439e-17 1.537e-01 0.0 1 --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 24.71 on 162 degrees of freedom Multiple R-squared: 2.057e-31, Adjusted R-squared: -0.006173 F-statistic: 3.333e-29 on 1 and 162 DF, p-value: 1 > z4 <- as.data.frame(cbind(m$residuals,m$fitted.values)) > names(z4) <- list('Residuals','Fitted') > plot(z4,main='Scatterplot, lowess, and regression line') > lines(lowess(z4),col='red') > abline(m4) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/5awjh1321355166.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > myr <- as.ts(m$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 -39.710 -4.727 3.500 8.038 23.424 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 0.009356 0.987392 0.009 0.992 Residuals -0.099649 0.078805 -1.264 0.208 Residual standard error: 12.61 on 161 degrees of freedom (2 observations deleted due to missingness) Multiple R-squared: 0.009834, Adjusted R-squared: 0.003684 F-statistic: 1.599 on 1 and 161 DF, p-value: 0.2079 > abline(m5) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/67ryz1321355166.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > hist(m$residuals,main='Residual Histogram',xlab='Residuals') > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/7b24q1321355166.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > if (par1 > 0) + { + densityplot(~m$residuals,col='black',main=paste('Density Plot bw = ',par1),bw=par1) + } else { + densityplot(~m$residuals,col='black',main='Density Plot') + } > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/8b1rt1321355166.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > acf(m$residuals,main='Residual Autocorrelation Function') > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/96u5z1321355166.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/10rzfz1321355166.tab") > > try(system("convert tmp/1i53b1321355166.ps tmp/1i53b1321355166.png",intern=TRUE)) character(0) > try(system("convert tmp/2txuf1321355166.ps tmp/2txuf1321355166.png",intern=TRUE)) character(0) > try(system("convert tmp/37m221321355166.ps tmp/37m221321355166.png",intern=TRUE)) character(0) > try(system("convert tmp/40nud1321355166.ps tmp/40nud1321355166.png",intern=TRUE)) character(0) > try(system("convert tmp/5awjh1321355166.ps tmp/5awjh1321355166.png",intern=TRUE)) character(0) > try(system("convert tmp/67ryz1321355166.ps tmp/67ryz1321355166.png",intern=TRUE)) character(0) > try(system("convert tmp/7b24q1321355166.ps tmp/7b24q1321355166.png",intern=TRUE)) character(0) > try(system("convert tmp/8b1rt1321355166.ps tmp/8b1rt1321355166.png",intern=TRUE)) character(0) > try(system("convert tmp/96u5z1321355166.ps tmp/96u5z1321355166.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 2.621 0.429 3.067