Robust alternatives to traditional analysis of variance: Welch W*, James J I*, James J II*, Brown-Forsythe BF*.
Contaminated data sets commonly appear in biomedical sciences. Traditional statistical analyses are based on a 'normality' assumption and homogeneity of variances assumption. If either or both assumptions are violated, traditional statistical procedures may give an inflated type I error rate and are then not robust. Robust alternatives to traditional one-way analysis of variance have better power curves and protect against inflated type I error rates.
Reed
J F
JF
Research Department, Lehigh Valley Hospital Center, Allentown, PA 18105.
Stark
D B
DB
D000704:Analysis of Variance; D001699:Biometry; D012984:Software