

PLOT 3 LCGA with covariate 

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Hello, I got the following problem with an LCGA (4 classes and one covariate): The output is saying that my slope for class 1 is negative (2.627), but the graph (estimated means)for this class is showing a positive slope. I don't understand how this can be? I am an absolute beginner working with Mplus and it would be wonderful if you could help me. Thank you very much!! 


The graph plots the means. In your model with a covariate, the intercepts are estimated not the means. 


Ok, thank you so much. Just to make sure I got it right: This output shows the intercepts (NOT the means as in a model without covariate): Intercepts I 22.007 2.332 9.436 0.000 S 2.421 0.781 3.101 0.002 And this one the effects for the regression of the intercept and slope on the covariate: I ON BAGE 0.009 0.019 0.466 0.641 S ON BAGE 0.027 0.008 3.446 0.001 


In a conditional model, a model with covariates, the intercepts of the intercept and slope growth factors are estimated. In an unconditional model, a model without covariates, the means of the intercept and slope growth factors are estimated. 

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