Code can be recreated in R with the following code (Commented out):
set.seed(127)x<-seq(1,200,1)err<-NULLfor(iinc(1:200)){err[i]<-rnorm(1,0,i)}y<-3.8*x+25+err;#Auxilliary regressionnaivelm<-lm(y~x)absresid<-abs(naivelm$residuals)auxreg<-lm(absresid~x+0)#no hskederrno<-NULLfor(iinc(1:200)){errno[i]<-rnorm(1,0,15)};yn<-3.8*x+25+errno;par(mfrow=c(2,1))plot(absresid~x,pch=20,main="Heteroskedastic Residuals",ylab="Absolute Value of Residuals")abline(coef=c(0,auxreg$coefficients),col=2)plot(abs(lm(yn~x)$residuals)~x,pch=20,main="Homoskedastic Residuals",ylab="Absolute Value of Residuals")abline(coef=c(lm(abs(lm(yn~x)$residuals)~x)$coefficients),col=2,lty=2);
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{{Information |Description = Comparison of residuals between first order Heteroskedastic and Homoskedastic disturbances |Source = I (~~~) created this work entirely by myself. |Date = ~~~~~ |Author = ~~~ |other_versions =
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One thought on “Cannabaceae”
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction