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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 Not Permitted [ R2]): 2001

NAEP Technical DocumentationPoststratification adjustments, grade 4 U.S. history national main assessment (accommodations not permitted [R2]): 2001

PS cell	Race/ethnicity	Region	Age group	Poststratification adjustment	Control total	Sum of pre-post weights
1	Black	All U.S.	Age 9	0.953	400,461	420,147
2	Black	All U.S.	Not age 9	1.048	214,629	204,829
3	Hispanic	All U.S.	Age 9	0.752	457,954	609,364
4	Hispanic	All U.S.	Not age 9	1.040	211,304	203,272
5	Other race/ethnicity	All U.S.	Age 9	0.770	157,982	205,207
6	Other race/ethnicity	All U.S.	Not age 9	1.331	63,787	47,933
7	Non-Hispanic White	Northeast Census reg	Age 9	1.125	407,644	362,313
8	Non-Hispanic White	Northeast Census reg	Not age 9	1.791	133,859	74,734
9	Non-Hispanic White	Midwest Census reg	Age 9	1.174	511,092	435,394
10	Non-Hispanic White	Midwest Census reg	Not age 9	1.232	221,672	179,914
11	Non-Hispanic White	South Census reg	Age 9	1.030	592,797	575,397
12	Non-Hispanic White	South Census reg	Not age 9	1.531	239,405	156,350
13	Non-Hispanic White	West Census reg	Age 9	1.208	380,061	314,586
14	Non-Hispanic White	West Census reg	Not age 9	1.635	111,455	68,180
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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