an edsurvey.data.frame.list with 4 elements
edsurvey.data.frame for 2005 NAEP (Mathematics) in USA
There are 1 full sample weight(s) in this edsurvey.data.frame
'origwt' with 62 JK replicate weights (the default).
There are 6 subject scale(s) or subscale(s) in this edsurvey.data.frame
'num_oper' subject scale or subscale with 5 plausible values.
'measurement' subject scale or subscale with 5 plausible values.
'geometry' subject scale or subscale with 5 plausible values.
'data_anal_prob' subject scale or subscale with 5 plausible values.
'algebra' subject scale or subscale with 5 plausible values.
'composite' subject scale or subscale with 5 plausible values (the default).
Omitted Levels: 'Multiple', 'NA', and 'Omitted'
edsurvey.data.frame for 2002 NAEP (Mathematics) in USA
edsurvey.data.frame for 2003 NAEP (Mathematics) in USA