Preliminary tests of normality when comparing three independent samples
Journal article, 2016
This paper uses simulation to explore the performance of a two-stage procedure where a preliminary Shapiro–Wilk test is used to choose between ANOVA and the Kruskal–Wallis test as three-sample location test. The results suggest that the two-stage procedure actually seems to be preferable when conducting such location tests.
preliminary tests
Shapiro-Wilk
Kruskal-Wallis
assumptions
Normality
ANOVA
Author
Björn Lantz
Chalmers, Technology Management and Economics, Innovation and R&D Management
Roy Andersson
School of engineering Jönköping university
Peter Manfredsson
University of Borås
Journal of Modern Applied Statistical Methods
1538-9472 (ISSN)
Vol. 15 2 135-148Subject Categories
Probability Theory and Statistics
DOI
10.22237/jmasm/1478002140