Planned versus Unplanned Contrasts : Exactly Why Planned Contrasts Tend To Have More Power against Type II Error /

The literature is reviewed regarding the difference between planned contrasts, OVA and unplanned contrasts. The relationship between statistical power of a test method and Type I, Type II error rates is first explored to provide a framework for the discussion. The concepts and formulation of contras...

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Bibliographic Details

Main Author:	Wang, Lin
Format:	Microform Book
Language:	English
Published:	[Washington, D.C.] : Distributed by ERIC Clearinghouse, 1993.
Subjects:	Analysis of Variance. Comparative Analysis. Hypothesis Testing. Literature Reviews. Power (Statistics) Research Design. Research Methodology. Robustness (Statistics) Planned Comparisons > Type II Errors Unplanned Contrasts Reports, Evaluative. Speeches/Meeting Papers.
Online Access:	http://www.eric.ed.gov/contentdelivery/servlet/ERICServlet?accno=ED364598