Comparing the “Typical Score” Across Independent Groups Based on Different Criteria for Trimming.
Syed Yahaya, S.S. and Othman, Prof.Madya Abdul Rahman and Keselman, H. J. (2006) Comparing the “Typical Score” Across Independent Groups Based on Different Criteria for Trimming. Metodološki zvezki, 3 (1). pp. 49-62.
Nonnormality and variance heterogeneity affect the validity of the traditional tests for treatment group equality (e.g. ANOVA F-test and t-test), particularly when group sizes are unequal. Adopting trimmed means instead of the usual least squares estimator has been shown to be mostly affective in combating the deleterious effects of nonnormality.
Repository Staff Only: item control page