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Levenetest

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Levenetest

by Antonio Trujillo-Ortiz

 

01 May 2003 (Updated 21 Jul 2003)

Levene's test for homogeneity of variances.

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Description

Levene's F test is used to test the null hypothesis that multiple population variances corresponding to multiplesamples are equal. Prior to the analysis the data are transforming to the absolute deviation of the mean. Then perform an one-way analysis of variance.
MATLAB release MATLAB 5.3 (R11)
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f test, homoscedasticity test, levenes test, probability, statistics
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Comments and Ratings (4)
08 Jun 2012 John

Checked out with another Excel Levene test I found online. Thanks!
04 Jun 2009 Farah

works easily and well. Thanks!
16 Oct 2005 Marie Loukou

After the following indications kindly provided by the author,
1. Levenetest(X) %here it takes the default alpha value = 0.05

2. Levenetest(X,0.1) %here you should give an alpha value

-----------
alpha = 0.1;
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3. Levenetest(X,alpha) %here previously you should define the alpha value

The test is a succes! Thanks a lot.
22 May 2005 Marie Loukou

Good test, thanks.
But for the last lines ("if P >= alpha..."), the following message appeared: "??? Error using ==> alpha
Too many output arguments".
Updates
07 May 2003

At the end of the third phrase of the description text a word of more should be eliminated (absolute).
09 May 2003

It was added an appropriate format to cite this file.
21 Jul 2003

Output results were improved.

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