OBrientest

O'Brien's Test for Homogeneity of Variances.

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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 (2026). OBrientest (https://in.mathworks.com/matlabcentral/fileexchange/3335-obrientest), MATLAB Central File Exchange. Retrieved .

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
Version Published Release Notes Action
1.0.0.0

Output results were improved.