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Type 'q()' to quit R. > y <- c(1,0,0,0,1,1,0,1,0,0,1,1,1,1,1,1,1,1,1,1,1,0,0,1,1,1,1,0,1,1,1,1,1,0,1,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,1) > x <- c(129.99,59.99,49.99,84.99,179.99,329.99,25.99,499.99,89.99,119.99,79.99,199.99,449.99,549.99,529.99,639.99,749.99,399.99,169.99,189.99,199.99,69.99,69.99,109.99,159.99,159.99,199.99,75,349.99,439.99,309.99,379.99,349.99,169.99,239.99,229.99,69.99,99.99,29.99,39.99,21.99,499.99,29.99,29.99,49.99,49.99,55.99,59.99,79.99,139.99,159.99,169.99,229.99,249.99,309.99,499.99,65.99,89.99,89.99,449.99) > 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 -0.6329 -0.2684 -0.1761 0.3754 0.7115 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 0.1279600 0.0721624 1.773 0.0814 . x 0.0020066 0.0002636 7.613 2.73e-10 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 0.3579 on 58 degrees of freedom Multiple R-squared: 0.4998, Adjusted R-squared: 0.4912 F-statistic: 57.96 on 1 and 58 DF, p-value: 2.731e-10 > postscript(file="/var/wessaorg/rcomp/tmp/14mud1321900033.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/2w0ko1321900033.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 -1.128e-16 -3.647e-17 -1.963e-17 1.572e-17 7.235e-16 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 1.280e-01 2.108e-17 6.071e+15 <2e-16 *** x 2.007e-03 7.699e-20 2.606e+16 <2e-16 *** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 1.045e-16 on 58 degrees of freedom Multiple R-squared: 1, Adjusted R-squared: 1 F-statistic: 6.794e+32 on 1 and 58 DF, p-value: < 2.2e-16 > z2 <- as.data.frame(cbind(x,m$fitted.values)) > names(z2) <- list('x','Fitted') > plot(z2,main='Scatterplot, lowess, and regression line') > lines(lowess(z2),col='red') > abline(m2) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/3gsuz1321900034.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > m3 <- lm(m$residuals ~ x) > summary(m3) Call: lm(formula = m$residuals ~ x) Residuals: Min 1Q Median 3Q Max -0.6329 -0.2684 -0.1761 0.3754 0.7115 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 3.198e-17 7.216e-02 0 1 x -8.079e-20 2.636e-04 0 1 Residual standard error: 0.3579 on 58 degrees of freedom Multiple R-squared: 4.588e-33, Adjusted R-squared: -0.01724 F-statistic: 2.661e-31 on 1 and 58 DF, p-value: 1 > z3 <- as.data.frame(cbind(x,m$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/4yvz51321900034.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 -0.3779 -0.2816 -0.1010 0.2100 1.0829 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 5.500e-01 4.618e-02 11.91 <2e-16 *** m$residuals 5.766e-17 1.313e-01 0.00 1 --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 0.3577 on 58 degrees of freedom Multiple R-squared: 2.458e-31, Adjusted R-squared: -0.01724 F-statistic: 1.425e-29 on 1 and 58 DF, p-value: 1 > z4 <- as.data.frame(cbind(m$residuals,m$fitted.values)) > names(z4) <- list('Residuals','Fitted') > plot(z4,main='Scatterplot, lowess, and regression line') > lines(lowess(z4),col='red') > abline(m4) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/5avb71321900034.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > myr <- as.ts(m$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 -0.5190 -0.2082 -0.1105 0.2495 0.8535 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -0.01055 0.04261 -0.248 0.80539 Residuals 0.35633 0.12009 2.967 0.00439 ** --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Residual standard error: 0.3273 on 57 degrees of freedom (2 observations deleted due to missingness) Multiple R-squared: 0.1338, Adjusted R-squared: 0.1186 F-statistic: 8.805 on 1 and 57 DF, p-value: 0.004386 > abline(m5) > grid() > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/6kztu1321900034.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > hist(m$residuals,main='Residual Histogram',xlab='Residuals') > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/7mn8k1321900034.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > if (par1 > 0) + { + densityplot(~m$residuals,col='black',main=paste('Density Plot bw = ',par1),bw=par1) + } else { + densityplot(~m$residuals,col='black',main='Density Plot') + } > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/8rkdw1321900034.ps",horizontal=F,onefile=F,pagecentre=F,paper="special",width=8.3333333333333,height=5.5555555555556) > acf(m$residuals,main='Residual Autocorrelation Function') > dev.off() null device 1 > postscript(file="/var/wessaorg/rcomp/tmp/978931321900034.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/108usp1321900034.tab") > > try(system("convert tmp/14mud1321900033.ps tmp/14mud1321900033.png",intern=TRUE)) character(0) > try(system("convert tmp/2w0ko1321900033.ps tmp/2w0ko1321900033.png",intern=TRUE)) character(0) > try(system("convert tmp/3gsuz1321900034.ps tmp/3gsuz1321900034.png",intern=TRUE)) character(0) > try(system("convert tmp/4yvz51321900034.ps tmp/4yvz51321900034.png",intern=TRUE)) character(0) > try(system("convert tmp/5avb71321900034.ps tmp/5avb71321900034.png",intern=TRUE)) character(0) > try(system("convert tmp/6kztu1321900034.ps tmp/6kztu1321900034.png",intern=TRUE)) character(0) > try(system("convert tmp/7mn8k1321900034.ps tmp/7mn8k1321900034.png",intern=TRUE)) character(0) > try(system("convert tmp/8rkdw1321900034.ps tmp/8rkdw1321900034.png",intern=TRUE)) character(0) > try(system("convert tmp/978931321900034.ps tmp/978931321900034.png",intern=TRUE)) character(0) > > > proc.time() user system elapsed 2.418 0.415 2.875