OBrientest

O'Brien's Test for Homogeneity of Variances.
1.3K Downloads
Updated 21 Jul 2003

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In the Obrien's test to check out the homogeneity of variances the data are transforming to
yij = ((nj-1.5)*nj*((xij-mean(xj))**2)-((0.5)*(var(xj))*(nj-1)))/((nj-1)*(nj-2))
and uses the F distribution performing an one-way ANOVA using y as the dependent variable.

Cite As

Antonio Trujillo-Ortiz (2024). OBrientest (https://www.mathworks.com/matlabcentral/fileexchange/3335-obrientest), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R11
Compatible with any release
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes
1.0.0.0

Output results were improved.