A power comparison of various tests of univariate normality on Ex-Gaussian distributions
Date
2013
Authors
Marmolejo Ramos, F.
Gonzalez-Burgos, J.
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Journal article
Citation
Methodology, 2013; 9(4):137-149
Statement of Responsibility
Fernando Marmolejo-Ramos, Jorge González-Burgos
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Abstract
A power analysis of seven normality tests against the Ex-Gaussian distribution (EGd) is presented. The EGd is selected on the basis that it is a particularly well-suited distribution to accommodate positively skewed distributions such as those observed in reaction times data. A pre-assessment of the power of the selected tests across various types of distributions was done via a meta-analysis and a comparison with other power analyses reported in the literature was also performed. General recommendations are given as to which tests should be used to test normality in data suspected to resemble an EG distribution. Additionally, some topics for future research regarding the use of confidence intervals and the computation of accurate critical values are outlined.
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Link to a related website: http://pdfs.semanticscholar.org/5414/491e5bfa5ffc47abb6a194b942c3490ef1d3.pdf, Open Access via Unpaywall
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© 2012 Hogrefe Publishing