skip to main content skip to footer

Estimation and Testing of Simplex Models ANCOVA

Author(s):
Joreskog, Karl G.
Publication Year:
1970
Report Number:
RB-70-42
Source:
ETS Research Bulletin
Document Type:
Report
Page Count:
47
Subject/Key Words:
Analysis of Covariance (ANCOVA), Mathematical Models, Statistical Analysis

Abstract

Various statistical models for simplex structures are formulated in terms of the well-known Wiener and Markov stochastic processes. A distinction is made between a perfect simplex and a quasi simplex. For each model the problems of identification and estimation of the parameters and that of testing the goodness of fit of the model are considered. All models may be estimated by a general method for covariance structures developed by Joreskog (1970), but in some cases simpler methods may be used, in which case these are presented.

Read More