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Final Primary Sampling Unit Sample

A primary sampling unit (PSU) sample was drawn independently from each of the 60 strata defined in Final Primary Sampling Unit Strata. One PSU was selected with probability proportionate to size (with size equal to number of youths) within each stratum.


Last updated 19 March 2008 (PE)

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National Center for Education Statistics - http://nces.ed.gov
U.S. Department of Education