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ERIC Number: EJ862822
Record Type: Journal
Publication Date: 2010
Pages: 7
Abstractor: As Provided
Reference Count: 3
ISSN: ISSN-0022-0973
A Note on Noncentrality Parameters for Contrast Tests in a One-Way Analysis of Variance
Liu, Xiaofeng Steven
Journal of Experimental Education, v78 n1 p53-59 2010
The noncentrality parameter for a contrast test in a one-way analysis of variance is based on the dot product of 2 vectors whose geometric meaning in a Euclidian space offers mnemonic hints about its constituents. Additionally, the noncentrality parameters for a set of orthogonal contrasts sum up to the noncentrality parameter for the omnibus "F" test. The author provides an example of Helmert contrasts to demonstrate the use of the noncentrality parameters in contrast tests. (Contains 1 figure.)
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A