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Type 'q()' to quit R. > y <- c(14,18,11,12,16,18,14,14,15,15,17,19,10,16,18,14,14,17,14,16,18,11,14,12,17,9,16,14,15,11,16,13,17,15,14,16,9,15,17,13,15,16,16,12,12,11,15,15,17,13,16,14,11,12,12,15,16,15,12,12,8,13,11,14,15,10,11,12,15,15,14,16,15,15,13,12,17,13,15,13,15,16,15,16,15,14,15,14,13,7,17,13,15,14,13,16,12,14,17,15,17,12,16,11,15,9,16,15,10,10,15,11,13,14,18,16,14,14,14,14,12,14,15,15,15,13,17,17,19,15,13,9,15,15,15,16,11,14,11,15,13,15,16,14,15,16,16,11,12,9,16,13,16,12,9,13,13,14,19,13,12,13) > x <- c(13,16,19,15,14,13,19,15,14,15,16,16,16,16,17,15,15,20,18,16,16,16,19,16,17,17,16,15,16,14,15,12,14,16,14,7,10,14,16,16,16,14,20,14,14,11,14,15,16,14,16,14,12,16,9,14,16,16,15,16,12,16,16,14,16,17,18,18,12,16,10,14,18,18,16,17,16,16,13,16,16,20,16,15,15,16,14,16,16,15,12,17,16,15,13,16,16,16,16,14,16,16,20,15,16,13,17,16,16,12,16,16,17,13,12,18,14,14,13,16,13,16,13,16,15,16,15,17,15,12,16,10,16,12,14,15,13,15,11,12,8,16,15,17,16,10,18,13,16,13,10,15,16,16,14,10,17,13,15,16,12,13) > 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 -7.0464 -1.4253 0.3326 1.5220 4.9536 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 11.20424 1.21747 9.203 <2e-16 *** x 0.18948 0.08053 2.353 0.0198 * --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 2.305 on 160 degrees of freedom Multiple R-squared: 0.03345, Adjusted R-squared: 0.02741 F-statistic: 5.537 on 1 and 160 DF, p-value: 0.01984 > postscript(file="/var/wessaorg/rcomp/tmp/1lud51321297071.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/2vpe51321297071.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 -1.305e-15 -3.053e-16 6.979e-17 4.715e-16 1.587e-15 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 1.120e+01 2.920e-16 3.837e+16 <2e-16 *** x 1.895e-01 1.931e-17 9.811e+15 <2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 5.529e-16 on 160 degrees of freedom Multiple R-squared: 1, Adjusted R-squared: 1 F-statistic: 9.626e+31 on 1 and 160 DF, p-value: < 2.2e-16 > z2 <- as.data.frame(cbind(x,m$fitted.values)) > names(z2) <- list('x','Fitted') > plot(z2,main='Scatterplot, lowess, and regression line') > lines(lowess(z2),col='red') > abline(m2) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/3t0ra1321297071.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > m3 <- lm(m$residuals ~ x) > summary(m3) Call: lm(formula = m$residuals ~ x) Residuals: Min 1Q Median 3Q Max -7.0464 -1.4253 0.3326 1.5220 4.9536 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -3.362e-16 1.217e+00 0 1 x 2.130e-17 8.053e-02 0 1 Residual standard error: 2.305 on 160 degrees of freedom Multiple R-squared: 5.06e-34, Adjusted R-squared: -0.00625 F-statistic: 8.097e-32 on 1 and 160 DF, p-value: 1 > z3 <- as.data.frame(cbind(x,m$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/wessaorg/rcomp/tmp/4phyd1321297071.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 -1.5065 -0.1801 0.1988 0.1988 0.9567 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 1.404e+01 3.369e-02 416.6 <2e-16 *** m$residuals 2.643e-17 1.471e-02 0.0 1 --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 0.4288 on 160 degrees of freedom Multiple R-squared: 4.729e-29, Adjusted R-squared: -0.00625 F-statistic: 7.567e-27 on 1 and 160 DF, p-value: 1 > z4 <- as.data.frame(cbind(m$residuals,m$fitted.values)) > names(z4) <- list('Residuals','Fitted') > plot(z4,main='Scatterplot, lowess, and regression line') > lines(lowess(z4),col='red') > abline(m4) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/5muzr1321297071.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > myr <- as.ts(m$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 -7.0565 -1.4243 0.3206 1.5016 4.9809 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -0.002025 0.182238 -0.011 0.991 Residuals -0.009798 0.079317 -0.124 0.902 Residual standard error: 2.312 on 159 degrees of freedom (2 observations deleted due to missingness) Multiple R-squared: 9.597e-05, Adjusted R-squared: -0.006193 F-statistic: 0.01526 on 1 and 159 DF, p-value: 0.9018 > abline(m5) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/6jje01321297071.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > hist(m$residuals,main='Residual Histogram',xlab='Residuals') > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/71f6i1321297071.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > if (par1 > 0) + { + densityplot(~m$residuals,col='black',main=paste('Density Plot bw = ',par1),bw=par1) + } else { + densityplot(~m$residuals,col='black',main='Density Plot') + } > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/8gds11321297071.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > acf(m$residuals,main='Residual Autocorrelation Function') > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/986741321297071.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/10vm9o1321297071.tab") > > try(system("convert tmp/1lud51321297071.ps tmp/1lud51321297071.png",intern=TRUE)) character(0) > try(system("convert tmp/2vpe51321297071.ps tmp/2vpe51321297071.png",intern=TRUE)) character(0) > try(system("convert tmp/3t0ra1321297071.ps tmp/3t0ra1321297071.png",intern=TRUE)) character(0) > try(system("convert tmp/4phyd1321297071.ps tmp/4phyd1321297071.png",intern=TRUE)) character(0) > try(system("convert tmp/5muzr1321297071.ps tmp/5muzr1321297071.png",intern=TRUE)) character(0) > try(system("convert tmp/6jje01321297071.ps tmp/6jje01321297071.png",intern=TRUE)) character(0) > try(system("convert tmp/71f6i1321297071.ps tmp/71f6i1321297071.png",intern=TRUE)) character(0) > try(system("convert tmp/8gds11321297071.ps tmp/8gds11321297071.png",intern=TRUE)) character(0) > try(system("convert tmp/986741321297071.ps tmp/986741321297071.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 2.655 0.466 3.144