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NAEP Weighting Procedures → Weighting Procedures and Variance Estimation for the 2001 National Main Assessment → Computation of School Weights → Computation of Poststratification Adjustments → Poststratification Procedures → Poststratification Adjustments, Grade 4 U.S. History National Main Assessment (Accommodations Permitted [R3]): 2001

NAEP Technical DocumentationPoststratification adjustments, grade 4 U.S. history national main assessment (accommodations permitted [R3]): 2001

PS cell	Race/ethnicity	Region	Age group	Poststratification adjustment	Control total	Sum of pre-post weights
1	Black	All U.S.	Age 9	0.948	400,461	422,505
2	Black	All U.S.	Not age 9	1.133	214,629	189,470
3	Hispanic	All U.S.	Age 9	0.715	457,954	640,808
4	Hispanic	All U.S.	Not age 9	0.992	211,304	212,966
5	Other race/ethnicity	All U.S.	Age 9	0.861	157,982	183,391
6	Other race/ethnicity	All U.S.	Not age 9	1.295	63,787	49,262
7	Non-Hispanic Whites	Northeast Census reg	Age 9	1.119	407,644	364,219
8	Non-Hispanic Whites	Northeast Census reg	Not age 9	1.282	133,859	104,387
9	Non-Hispanic Whites	Midwest Census reg	Age 9	1.144	511,092	446,678
10	Non-Hispanic Whites	Midwest Census reg	Not age 9	1.339	221,672	165,593
11	Non-Hispanic Whites	South Census reg	Age 9	1.020	592,797	581,261
12	Non-Hispanic Whites	South Census reg	Not age 9	1.328	239,405	180,276
13	Non-Hispanic Whites	West Census reg	Age 9	1.116	380,061	340,528
14	Non-Hispanic Whites	West Census reg	Not age 9	1.630	111,455	68,398
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2001 U.S. History Assessment.

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