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Peer reviewed Peer reviewed
ERIC Number: EJ282210
Record Type: CIJE
Publication Date: 1983
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
The Effects of Unequal Covariances on the Tukey WSD Test.
Renner, Barbara Rochen; Ball, Donald W.
Educational and Psychological Measurement, v43 n1 p27-34 Spr 1983
To determine the effect of violating the assumption of homogeneity of covariance for the Tukey Wholly Significant Difference (WSD) test, Monte Carlo simulations varied the number of treatment groups, sample size, and degree of covariance heterogeneity. As covariance heterogeneity was increased, the empirical significance levels increased beyond the nominal levels. (Author/BW)
Descriptors: Data Analysis, Hypothesis Testing, Monte Carlo Methods, Research Methodology, Statistical Significance
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Homogeneity of Covariance; Tukey Wholly Significant Difference Test; Type I Errors; Violation of Assumptions