Date: Sun, 5 Apr 2009 09:16:00 -0400
Reply-To: Arthur Tabachneck <art297@NETSCAPE.NET>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Arthur Tabachneck <art297@NETSCAPE.NET>
Subject: Re: Heteroscedasticity
Jack,
We definitely CAN'T have that, so here is a mention:
http://en.wikipedia.org/wiki/Homoskedasticity
Art
-----
On Sat, 4 Apr 2009 15:07:12 -0700, Jack Hamilton <jfh@STANFORDALUMNI.ORG>
wrote:
>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
>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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