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Q: Statistics Question ( No Answer,   2 Comments )
Question  
Subject: Statistics Question
Category: Reference, Education and News > Teaching and Research
Asked by: michellec513-ga
List Price: $10.00
Posted: 27 Dec 2005 11:21 PST
Expires: 26 Jan 2006 11:21 PST
Question ID: 610165
I am looking for the formula to complete the Brown and Forsythe Test
for homogeneity of variance and an example of someone else completing
the test by hand.
Answer  
There is no answer at this time.

Comments  
Subject: Re: Statistics Question
From: sukhjeetsingh-ga on 28 Dec 2005 01:03 PST
 
Hi michellec513-ga 
This paper gives the formula and an example.
http://www.psych.nyu.edu/cohen/eps12dr1.pdf 
Let me know if you find it useful.
Regards
Sukhjeet
Subject: Re: Statistics Question
From: michellec513-ga on 28 Dec 2005 13:44 PST
 
Thank you -- it seems to provide information for the ANOVA F test that
Brown and Forsythe proposed; however, this has been my own problem in
searching in that I keep finding this test, which statistically
packages actually do for you.  Unfortunately, the test I am looking
for by them tests for the homogeneity of variances.  From what I have
seemed to find out, this test compares variances by using medians;
however, I can't seem to find an example of the formula and how one
would use it.  A popular test for homogeneity of variance that is used
is the Levene's Test, however, my professor would like me to use the
Brown and Forsythe test instead.  I hope this helps.  Thank you again
for the link.

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