5.0 | 4 ratings Rate this file 9 downloads (last 30 days) File Size: 3.88 KB File ID: #3292

Cochtest

21 Apr 2003 (Updated 21 Jul 2003)

Cochran's test for homogeneity of variances for equal or unequal sample sizes.

File Information
Description	Cochran's C is a set of k Chi-squared distributed sums of squares (or the corresponding variances), each of v degrees of freedom. To accept at a significance level (alpha) that the maximum variance differ from the other ones, one should examine this function. It works for equal or unequal sample sizes. To solve it calls the Cochran's cumulative distribution function (cochcdf).
MATLAB release	MATLAB 5.3 (R11)
Zip File Content
Other Files	cochcdf.m, Cochtest.m

Tags for This File
Everyone's Tags	chisquared(2), cochrans test, homoscedasticity test, probability, statistics
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Comments and Ratings (4)
24 Apr 2003	Roger wang
25 Oct 2004	Promi binti	it's really helpful
24 Sep 2005	andrei kharabadze	Very user-friendly
16 Apr 2006	Ana Carolina Rojas

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Updates
28 Apr 2003	This file must to call the function cochcdf not cochpdf.
01 May 2003	It was added an appropriate format to cite this file.
21 Jul 2003	Output results were improved.

Tag Activity for this File
Tag	Applied By	Date/Time
statistics	Antonio Trujillo-Ortiz	22 Oct 2008 07:00:10
probability	Antonio Trujillo-Ortiz	22 Oct 2008 07:00:10
cochrans test	Antonio Trujillo-Ortiz	22 Oct 2008 07:00:10
chisquared	Antonio Trujillo-Ortiz	22 Oct 2008 07:00:11
homoscedasticity test	Antonio Trujillo-Ortiz	22 Oct 2008 07:00:11
chisquared	Douglas	31 May 2009 16:32:00

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