Robust Nonorthogonal Analyses Revisited: An Update Based on Trimmed Means.

Keselman, H. J.; Kowalchuk, Rhonda K.; Lix, Lisa M.

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Peer reviewed

ERIC Number: EJ571236

Record Type: Journal

Publication Date: 1998

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0033-3123

EISSN: N/A

Robust Nonorthogonal Analyses Revisited: An Update Based on Trimmed Means.

Keselman, H. J.; Kowalchuk, Rhonda K.; Lix, Lisa M.

Psychometrika, v63 n2 p145-63 Jun 1998

Three approaches to the analysis of main and interaction effect hypotheses in nonorthogonal designs were compared in a 2 x 2 design for data that was neither normal in form nor equal in variance. The Welch-James test with trimmed means and Winsorized variances provided excellent Type I error control. (SLD)

Descriptors: Interaction, Research Design, Robustness (Statistics)

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A