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Useobservations or SUBPOPULATION |
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Is there any difference between using the useobservations or SUBPOPULATION comand to select a sub-sample. For instance to analysis a single country data in the TIMSS or PISA data set which of the commands will give the correct standard errors/parameter estimates. |
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There is a difference. With TYPE=COMPLEX you should use SUBPOPULATION. There is a reference in the user's guide under the SUBPOPULATION option. |
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