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MBoxtest(X,alpha) Multivariate Statistical Testing for the Homogeneity of Covariance Matrices by the Box's M.
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3.3 | 3 ratings Rate this file 7 Downloads (last 30 days) File Size: 3.42 KB File ID: #2733

MBoxtest

18 Nov 2002 (Updated 12 Dec 2003)

Multivariate statistical testing for the homogeneity of covariance matrices by the Box's M.

File Information
Description	From a total multivariate data matrix and a significance level, the homogeneity covariance matrices are testing by the Box's M, given a Chi-square or F approximation in function of the group sample-size.
MATLAB release	MATLAB 5.3 (R11)

Tags for This File
Everyone's Tags	boxs m test, covariance homogeneity test, multivariate, probability, statistics
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Comments and Ratings (4)
27 Nov 2003	Wladimir Alonso	Very usefull and with good explanations (examples, references, etc). Thanks Antonio et al!
07 Feb 2006	ira wan	no bad
01 Nov 2007	Ji Cling	Shame on you. Self downloading 1000ths of times to get to the top of the rank.
01 Nov 2007	Michael Hamman	My Dear Ji Cling, Regularly I visit this FEX site in which excellent contributions for the fast solution of diverse types of problems in several disciplines have been given. The accusation that you are causing is very delicate. I do not know you. Neither the authors. We known them only by the references given in their author page. Only what I believe is in the quality of ethics of each one of them and ours. We are serious people dedicated to our work in the most diverse specialties. To be certain what you say. Then not alone this author does cheating but also all the others. Even you, that in principle, I think you are not signing with your true name. Finally, or really the community are honestly dawnloaded the m-files or finally someone are doing a very bad play. This because there exists a lack of control on this. Best Wishes. Mike

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Updates
18 Nov 2002	In order to minimize the file-size, lines 115-123 (9) are reducing to only two. Such are: suma1=sum(1./(n(1:g)-1)); suma2=sum(1./((n(1:g)-1).^2));
22 Apr 2003	It was added an appropriate format to cite this file.
08 Dec 2003	The file was improved simplifying the input arguments as the samples-size vector request, now automatically estimated.
12 Dec 2003	Significance level was reassigned.

Tag Activity for this File
Tag	Applied By	Date/Time
statistics	Antonio Trujillo-Ortiz	22 Oct 2008 06:54:05
probability	Antonio Trujillo-Ortiz	22 Oct 2008 06:54:05
multivariate	Antonio Trujillo-Ortiz	22 Oct 2008 06:54:05
covariance homogeneity test	Antonio Trujillo-Ortiz	22 Oct 2008 06:54:05
boxs m test	Antonio Trujillo-Ortiz	22 Oct 2008 06:54:05