can you do a sem model with factor scores what is the advantage of the symmetric estimation of measurement model? what is the alternative to a simultaneous sem how to do a simultaneous sem what is two-step approach to estimating structural equations? why use a two step method with a sim what is the two-step method for estimating sem what is the different ways of estimating a structural equation? difference between simultaneous model and structural model why do we do two step sem why is sem used to estimate parameters how is the simultaneous estimate of a structural equation used in structural modeling what is the difference between a sem and a linear model what is the two step way how to run a simultaneous sem what is the difference of the simultaneous estimator and the two-step method? what is the difference between a measurement model and a structural model? different ways to run a structural model why do we use the two-stage method in sem difference between simultaneous and separate estimate of structural equation