search for: leycuras

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2000 Dec 07
2
Heteroskedasticity in R
Hi all, I just discovered R a couple of days ago and I must say it rocks. I've been looking for heteroskedasticity tests and couldn't find any, however. Particularly, I've been told in one of my courses on econometrics of White's method (>< white.test()). The test's statistic is beta / sqrt(W), where W is Var(beta) "? la White", that is the beta(i) matrix is
2000 Dec 08
0
Re: R-help Digest V2 #283
R-help Digest wrote: > ------------------------------ > > Date: Thu, 07 Dec 2000 18:28:09 +0100 > From: Uwe Ligges <ligges at statistik.uni-dortmund.de> > Subject: Re: [R] Heteroskedasticity in R > > Vincent Leycuras wrote: > > > > Hi all, > > > > I just discovered R a couple of days ago and I must say it rocks. I've been > > looking for heteroskedasticity tests and couldn't find any, however. > > Particularly, I've been told in one of my courses on econometrics o...