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.
Kruskal-Wallis
assumptions
preliminary tests
Normality
ANOVA
Shapiro-Wilk
Author
Björn Lantz
Chalmers, Technology Management and Economics, Innovation and R&D Management
Roy Andersson
Hogskolan i Jonkoping
Peter Manfredsson
Hogskolan i Boras
Journal of Modern Applied Statistical Methods
1538-9472 (ISSN)
Vol. 15 2 135-148Subject Categories (SSIF 2011)
Probability Theory and Statistics
DOI
10.22237/jmasm/1478002140