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International Conference on Statistics, Combinatorics and Related Areas - 7th International Conference of the Forum for Interdisciplinary Mathematics
December 19-21, 2000
Indian Institute of Technology-Bombay
Mumbai, Maharastra, India

Organizers
Satya N. Mishra (University of South Alabama), Sanjeev V. Sabnis (IIT, Bombay)

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MANOVA with Random Subject Effects
by
Pradeep Singh
Penn State, Erie, PA, USA
Coauthors: Govinda Weerakkody (Mississippi State Univ., MS, USA)

Effect of random subject effects on the usual MANOVA tests is considered. It is empirically observed that there is a substantial shift in the type I error from its advertised value. In particular, the type I error decreases when the treatments are applied within subjects and increases when the treatments are applied between subjects. Random subject effects contaminate the estimation of hypothesis matrix and error matrix, hence affect the MANOVA tests. Some adjusments that control the type I error close to its advertised value are proposed and evaluated.

Date received: October 15, 2000

Copyright © 2000 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cafr-52.