A two-stage procedure for testing against a simple ordered alternative under heteroscedasticity
LE3 .A278 2005
Bachelor of Science
Mathematics and Statistics with Biology
Mathematics & Statistics
Procedures for testing the equality of normal means in conventional analysis of variance (ANOVA) depend heavily on the assumption of equality of the error variances. Studies have shown that the test is not robust when this assumption is violated (a situation known as heteroscedasticity). The one-way fixed effects analysis of variance model with normal variances which are unknown and possibly unequal is considered....
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