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Analysis of Covariance	2
Error of Measurement	2
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Multivariate Behavioral…

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Algina, James	1
Neale, Michael C.	1
Tang, K. Linda	1

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Performance of Four Multivariate Tests under Variance-Covariance Heteroscedasticity.

Peer reviewed

Tang, K. Linda; Algina, James – Multivariate Behavioral Research, 1993

Type I error rates of four multivariate tests (Pilai-Bartlett trace, Johansen's test, James' first-order test, and James' second-order test) were compared for heterogeneous covariance matrices in 360 simulated experiments. The superior performance of Johansen's test and James' second-order test is discussed. (SLD)

Descriptors: Analysis of Covariance, Analysis of Variance, Comparative Analysis, Equations (Mathematics)

Multiple Regression with Data Collected from Relatives: Testing Assumptions of the Model.

Peer reviewed

Neale, Michael C.; And Others – Multivariate Behavioral Research, 1994

In studies of relatives, conventional multiple regression may not be appropriate because observations are not independent. Obtaining estimates of regression coefficients and correct standard errors from these populations through a structural equation modeling framework is discussed and illustrated with data from twins. (SLD)

Descriptors: Analysis of Covariance, Causal Models, Data Collection, Error of Measurement