Power Comparisons of Eight Tests for Sphericity in Repeated Measures Designs.

Cornell, John E.; And Others

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Peer reviewed

ERIC Number: EJ452335

Record Type: Journal

Publication Date: 1992

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ISSN: ISSN-0362-9791

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Power Comparisons of Eight Tests for Sphericity in Repeated Measures Designs.

Cornell, John E.; And Others

Journal of Educational Statistics, v17 n3 p233-49 Fall 1992

This Monte Carlo simulation studied the relative power of 8 tests for sphericity in randomized block designs where sample size was small (10, 15, 20, and 30) and population covariance matrices of dimension-to-sample size ratio approached 1.0. The locally best invariant test demonstrated substantial power to detect departures from sphericity. (SLD)

Descriptors: Comparative Analysis, Equations (Mathematics), Mathematical Models, Monte Carlo Methods, Power (Statistics), Sample Size, Simulation

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

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