

Estimated means and variance for LGC ... 

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Hello, I have a question about calculating the values for the factor variance provided by Tech4. If I had a simple model such as: i s  y1@0 y2@1 y3@2 y4@3; i s ON x; Using the Mplus short course notes (from 5/17/10; slide 96), I can see the equations for calculating the estimated estimated means using covariates, but not the estimated conditional variance. So, the estimated mean for the intercept factor would would just be: E(eta_0) = intercept + gamma*E(x) After searching the message boards, looking through the technical appendices, and the short course notes, I can't seem to find the (scalar) formula for the variance of eta_0 once covariates are added. I realize this can be done rather straightforwardly using the TECH4 option, but was wondering if it could be hand calculated from different pieces of the output Mplus provides. Thanks! 


V(eta_0) = gamma squared*var(x) + residual variance (eta_0) where the variance of x is obtained from sample statistics. 

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