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Download full textHollingsworth, Holly H. – 1976
This study shows that the test statistic for Analysis of Covariance (ANCOVA) has a noncentral F-districution with noncentrality parameter equal to zero if and only if the regression planes are homogeneous and/or the vector of overall covariate means is the null vector. The effect of heterogeneous regression slope parameters is to either increase…
Descriptors: Analysis of Covariance, Hypothesis Testing, Models, Power (Statistics)
Peer reviewedKaplan, David; Wenger, R. Neill – Multivariate Behavioral Research, 1993
This article presents a didactic discussion on the role of asymptotically independent test statistics and separable hypotheses as they pertain to issues of specification error, power, and model misspecification in the covariance structure modeling framework. A small population study supports the major findings. (SLD)
Descriptors: Equations (Mathematics), Estimation (Mathematics), Hypothesis Testing, Models
