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NAEP Technical DocumentationComputing Student-Level Replicate Base Weights for the 2012 Economics Assessment

For the 2012 grade 12 economics assessment, the calculation of the student-level replicate base weights for student k from school s in stratum j for each of the 62 replicates, STU_BWT_jsk(r), where r = 1 to 62, were calculated as follows:  

     

where

• SCH_BWT_js(r) is the replicate school base weight;

• SCHSESWT_js is the school-level session assignment weight used in the full-sample weight;

• WINSCHWT_js is the within-school student sampling weight used in the full-sample weight;

• STUSESWT_jsk is the student-level session assignment weight used in the full-sample weight;

• SUBJFAC_js is the subject factor used in the full-sample weight;

• SUBADJ_js is the substitute adjustment factor used in the full-sample weight; and

• YRRND_AF_js is the year-round adjustment factor used in the full-sample weight.

These components are described on the Student Base Weights page.

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