On 03/29/2011 10:49 PM, jouba wrote:

Dear all

I have an  error mesage
« error message : the MLM estimator can not be used when data are incomplete »
When i use the function sem(package lavaan) and  when i  fill  the  paramters  
estimator  and missing
estimator="MLM", missing="ml"

i understand by this that i am not allowed to use estimator= ``mlm ``  in 
parralle to the parameter missing

You understood correctly. Estimator 'MLM' (=ML estimation + Satorra-Bentler scaled test statistic) is only defined for complete data. The equivalent for incomplete data is the estimator 'MLR' (=ML estimation + Yuan-Bentler scaled test statistic).

Yves.

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