The effect of interaction and rounding error in two-way ANOVA: example of impact on testing for normality
A key issue in various applications of analysis of variance (ANOVA) is testing for the interaction and the interpretation of resulting ANOVA tables. In this note it is demonstrated that for a two-way ANOVA, whether interactions are incorporated or not may have a dramatic influence when considering the usual statistical tests for normality of residuals. The effect of numerical rounding is also discussed.
Year of publication: |
2010
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Authors: | Ryden, Jesper ; Alm, Sven Erick |
Published in: |
Journal of Applied Statistics. - Taylor & Francis Journals, ISSN 0266-4763. - Vol. 37.2010, 10, p. 1695-1701
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Publisher: |
Taylor & Francis Journals |
Subject: | analysis of variance | rounding error | Shapiro-Wilk test | factorial experiment | interaction |
Saved in:
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