F tests with random sample sizes. Theory and applications

Given a fixed time span for collecting observations in a study comparing, for example, the pathologies of patients entering a hospital sequentially, it is advisable to consider the sample sizes of the ANOVA levels as random variables. Using this approach, more powerful tests are developed, leading to lower critical values. The approach is used to obtain the minimum duration of data collection to ensure a pre-fixed power for the F test.

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Year of publication:	2013
Authors:	Moreira, Elsa E. ; Mexia, João T. ; Minder, Christoph E.
Published in:	Statistics & Probability Letters. - Elsevier, ISSN 0167-7152. - Vol. 83.2013, 6, p. 1520-1526
Publisher:	Elsevier
Subject:	ANOVA \| F distribution \| Pathologies comparison \| Poisson distribution \| Power analysis

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

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