On Apr 4, 2009, at 2:51 pm, Michael Raithel wrote:

> Dear SAS-L-ers, > > Priyanka posted the following: > >> Dear all, >> >> I want to check for the presence of heteroscedasticity in the >> residuals of the regression that I ran. How to do it in SAS? >> > > Priyanka it looks like you got your answer from several talented SAS- > L-ers, and I certainly won't be of any help on this topic. > > I just wanted to confess that the word "Heteroscedasticity" is my > absolute favorite word on the 'L! I am not concerned about > heteroscedasticity at my job, I have a vague idea of what > heteroscedasticity means (http://en.wikipedia.org/wiki/Heteroskedasticity > ), I don't really think about heteroscedasticity in my off hours, I > never read articles concerned with heteroscedasticity, and I have > never used it in a spoken sentence--except to say it under my breath > in my office when reading an 'L posting. However, I have been > fascinated by that word since I first read it on the 'L and never > miss a posting concerning heteroscedasticity!

But you people never mention homoscedasticity! What kind of bigoted list is this, anyway!

-- Jack Hamilton jfh@alumni.stanford.org Videtis illam spirare libertatis auram

> > > All right; now you all know one (of my many) dark little SAS-L > obsessions. I wonder if there are others on this list who are > fascinated by words/topics that are either irrelevant to them... > > Priyanka, best of luck in all of your heteroscedasticity endeavors! > > > I hope that this suggestion proves helpful now, and in the future! > > Of course, all of these opinions and insights are my own, and do not > reflect those of my organization or my associates. All SAS code and/ > or methodologies specified in this posting are for illustrative > purposes only and no warranty is stated or implied as to their > accuracy or applicability. People deciding to use information in > this posting do so at their own risk. > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Michael A. Raithel > "The man who wrote the book on performance" > E-mail: MichaelRaithel@westat.com > > Author: Tuning SAS Applications in the MVS Environment > > Author: Tuning SAS Applications in the OS/390 and z/OS Environments, > Second Edition > http://www.sas.com/apps/pubscat/bookdetails.jsp?catid=1&pc=58172 > > Author: The Complete Guide to SAS Indexes > > http://www.sas.com/apps/pubscat/bookdetails.jsp?catid=1&pc=60409 > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > There is no greater impediment to the advancement of knowledge > than the ambiguity of words. - Thomas Reid > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++