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Interaction2
Research Design2
Analysis of Covariance1
Equations (Mathematics)1
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Multivariate Behavioral…2
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Algina, James2
Keselman, H. J.1
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Testing Repeated Measures Hypotheses When Covariance Matrices Are Heterogeneous: Revisiting the Robustness of the Welch-James Test.
Peer reviewed Peer reviewed
Keselman, H. J.; Algina, James – Multivariate Behavioral Research, 1997
Examines the recommendations of H. Keselman, K. Carriere, and L. Lix (1993) regarding choice of sample size for obtaining robust tests of the repeated measures main and interaction hypotheses in a one Between-Subjects by one Within- Subjects design with a Welch-James type multivariate test when covariance matrices are heterogeneous. (SLD)
Descriptors: Analysis of Covariance, Interaction, Multivariate Analysis, Research Design
Some Alternative Approximate Tests for a Split Plot Design.
Peer reviewed Peer reviewed
Algina, James – Multivariate Behavioral Research, 1994
Alternative tests are presented for the between-by-within interaction null hypothesis and for two within-subjects main effects null hypothesis in a split plot design. Estimated Type I error rates for the interaction tests and for several tests of the second null hypothesis are reported. (SLD)
Descriptors: Equations (Mathematics), Error of Measurement, Estimation (Mathematics), Hypothesis Testing