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NAEP Analysis and Scaling → Estimation of Population and Student Group Distributions → Examining the Population-Structure Models Used in NAEP → Proportion of Variance of the Group-Defining Contrasts Accounted for by the Principal Components Used in NAEP Student Group Distribution Models → Proportion of Variance of the Group-Defining Contrasts Accounted for by the Principal Components Used in the Population-Structure Model, Grade 12 U.S. History National Main Assessment (Accommodations Permitted): 2001

NAEP Technical DocumentationProportion of variance of the group-defining contrasts accounted for by the principal components used in the population-structure model, grade 12 U.S. history national main assessment (accommodations permitted [R3]): 2001

Group-defining contrast	Proportion of variance
Female	0.96
Black	0.97
Hispanic	0.97
Asian	0.96
Mexican	0.95
Puer Ric	0.97
Cubn,Oth	0.97
Hisp-?	0.98
MID CTY7	0.95
FR/LCTY7	0.95
FR/MCTY7	0.95
LAR TWN7	0.96
SML TWN7	0.95
Other	0.94
HS Grad	0.96
Post HS	0.96
COL Grad	0.97
PARED-?	0.95
S East	0.91
Central	0.88
West	0.88
Private	0.95
Catholic	0.93
Modage	0.99
Above	0.99
Black	0.92
Hispanic	0.84
Asian	0.85
IEP-NO	0.99
LEP-NO	0.97
Title-N	0.83
RED PRIC	0.96
Free	0.84
Info N/A	0.86
SCH/REF	0.91
SCH/NP	0.87
TVLIN-0	0.97
TV-QUAD	0.97
NO ACCOM	0.99
BIL.DICT	0.96
LRG.PRT	0.99
EXT.TIME	0.98
READALOU	0.97
SMALLGRP	0.98
SCRIBE	0.98
O.RELIG	0.91
Course1	0.97
Course2	0.96
Course3	0.96
Course4	0.96
COURMISS	0.90
G/R 22	0.91
G/R 23	0.90
G/R 24	0.94
G/T 22	0.69
G/T 23	0.70
G/T 24	0.67
G/T 25	0.88
G/T 26	0.65
G/T 27	0.70
G/P 22	0.93
G/P 23	0.95
G/P 24	0.89
G/P 25	0.88
G/S 22	0.93
G/S 23	0.92
R/T 24	0.90
R/T 25	0.91
R/T 26	0.90
R/T 27	0.96
R/T 31	0.89
R/T 32	0.91
R/T 33	0.91
R/T 34	0.90
R/T 35	0.92
R/T 36	0.95
R/T 37	0.91
R/T 41	0.92
R/T 42	0.90
R/T 43	0.90
R/T 44	0.91
R/T 45	0.94
R/T 46	0.93
R/P 24	0.89
R/P 25	0.89
R/P 31	0.89
R/P 32	0.79
R/P 33	0.88
R/P 34	0.89
R/P 35	0.89
R/P 41	0.83
R/P 42	0.94
R/P 43	0.94
R/P 44	0.93
R/P 45	0.85
R/S 31	0.97
R/S 32	0.97
R/S 33	0.96
R/S 41	0.94
R/S 42	0.95
R/S 43	0.96
P/T 25	0.82
P/T 26	0.81
P/T 27	0.75
P/T 31	0.91
P/T 32	0.80
P/T 33	0.74
P/T 34	0.81
P/T 35	0.79
P/T 36	0.77
P/T 37	0.91
P/T 41	0.78
P/T 42	0.74
P/T 43	0.83
P/T 44	0.79
P/T 45	0.81
P/T 46	0.91
P/T 47	0.78
P/T 51	0.78
P/T 52	0.86
P/T 53	0.89
P/T 54	0.84
P/T 55	0.94
P/T 56	0.90
P/T 57	0.83
T/S 41	0.93
T/S 42	0.95
T/S 43	0.94
T/S 51	0.93
T/S 52	0.95
T/S 53	0.95
T/S 61	0.98
T/S 62	0.97
T/S 63	0.96
P/S 32	0.94
P/S 33	0.92
P/S 41	0.93
P/S 42	0.91
P/S 43	0.93
P/S 51	0.92
P/S 52	0.93
P/S 53	0.94
A/G 22	0.92
A/R 22	0.93
A/R 23	0.93
A/R 24	0.96
A/T 22	0.93
A/T 23	0.92
A/T 24	0.93
A/T 25	0.93
A/T 26	0.92
A/T 27	0.93
A/P 22	0.87
A/P 23	0.91
A/P 24	0.91
A/P 25	0.88
A/S 22	0.97
A/I 22	0.99
A/L 22	0.98
G/C 22	0.92
G/C 23	0.95
G/C 24	0.95
G/C 25	0.93
G/C 26	0.91
R/C 24	0.90
R/C 25	0.91
R/C 26	0.90
R/C 31	0.89
R/C 32	0.86
R/C 33	0.90
R/C 34	0.91
R/C 35	0.90
R/C 36	0.89
R/C 41	0.88
R/C 42	0.94
R/C 43	0.94
R/C 44	0.94
R/C 45	0.94
R/C 46	0.92
P/C 25	0.87
P/C 26	0.90
P/C 31	0.87
P/C 32	0.83
P/C 33	0.90
P/C 34	0.89
P/C 35	0.90
P/C 36	0.91
P/C 41	0.79
P/C 42	0.90
P/C 43	0.87
P/C 44	0.89
P/C 45	0.89
P/C 46	0.82
P/C 51	0.89
P/C 52	0.86
P/C 53	0.88
P/C 54	0.88
P/C 55	0.89
P/C 56	0.83
C/T 26	0.81
C/T 27	0.79
C/T 31	0.78
C/T 32	0.91
C/T 33	0.77
C/T 34	0.78
C/T 35	0.75
C/T 36	0.77
C/T 37	0.77
C/T 41	0.90
C/T 42	0.75
C/T 43	0.76
C/T 44	0.77
C/T 45	0.78
C/T 46	0.76
C/T 47	0.88
C/T 51	0.74
C/T 52	0.75
C/T 53	0.78
C/T 54	0.79
C/T 55	0.81
C/T 56	0.92
C/T 57	0.81
C/T 61	0.82
C/T 62	0.75
C/T 63	0.89
C/T 64	0.87
C/T 65	0.89
C/T 66	0.91
C/T 67	0.88
C/S 33	0.95
C/S 41	0.94
C/S 42	0.96
C/S 43	0.94
C/S 52	0.95
C/S 53	0.94
C/S 61	0.95
C/S 62	0.94
A/C 22	0.93
A/C 23	0.90
A/C 24	0.93
A/C 25	0.87
A/C 26	0.91
SAMP S3	0.83
S/R 22	0.89
S/R 23	0.90
S/R 24	0.95
RPT NO	0.99
B008201B	0.95
B008201C	0.95
B008201D	0.95
B008201E	0.97
B008201F	0.98
B008201G	0.98
B008201M	0.71
B017001B	0.96
B017001I	0.95
B017001M	0.90
B000905N	0.98
B000905I	0.95
B000905M	0.75
B013801B	0.97
B013801C	0.96
B013801D	0.96
B013801M	0.87
B017101B	0.77
B017101M	0.65
B017201B	0.79
B017201I	0.94
B017201M	0.93
B017301B	0.80
B017301I	0.93
B017301M	0.92
B017401B	0.94
B017401C	0.95
B017401D	0.95
B017401E	0.94
B017401M	0.91
B017601B	0.98
B017601C	0.98
B017601D	0.95
B017601M	0.81
B017701B	0.95
B017701C	0.96
B017701M	0.80
B017801B	0.92
B017801C	0.89
B017801D	0.92
B017801E	0.85
B017801M	0.89
B017901B	0.88
B017901C	0.89
B017901D	0.86
B017901M	0.88
B018001B	0.91
B018001C	0.93
B018001D	0.93
B018001E	0.89
B018001M	0.83
B018101B	0.85
B018101C	0.87
B018101D	0.92
B018101E	0.96
B018101M	0.84
B003501B	0.87
B003501C	0.88
B003501D	0.91
B003501I	0.83
B003501M	0.89
B003601B	0.89
B003601C	0.87
B003601D	0.90
B003601I	0.87
B003601M	0.89
B018201B	0.96
B018201C	0.90
B018201D	0.82
B018201M	0.78
B019001B	0.94
B019001C	0.89
B019001D	0.96
B019001E	0.83
B019001M	0.84
B019201B	0.89
B019201C	0.96
B019201D	0.95
B019201E	0.95
B019201M	0.89
B019301B	0.90
B019301C	0.93
B019301D	0.95
B019301E	0.97
B019301M	0.78
B020501B	0.91
B020501C	0.91
B020501D	0.94
B020501M	0.93
B020502B	0.95
B020502C	0.97
B020502D	0.95
B020502M	0.89
B020503B	0.90
B020503C	0.90
B020503D	0.93
B020503M	0.77
B020504B	0.89
B020504C	0.88
B020504D	0.91
B020504M	0.84
B020505B	0.93
B020505C	0.92
B020505D	0.95
B020505M	0.89
B020506B	0.95
B020506C	0.98
B020506D	0.95
B020506M	0.87
B020507B	0.95
B020507C	0.97
B020507D	0.95
B020507M	0.91
B020508B	0.94
B020508C	0.95
B020508D	0.93
B020508M	0.92
B020509B	0.93
B020509C	0.92
B020509D	0.88
B020509M	0.88
B020601B	0.89
B020601C	0.93
B020601D	0.77
B020601E	0.82
B020601M	0.88
B020602B	0.89
B020602C	0.88
B020602D	0.75
B020602E	0.85
B020602M	0.88
B020603B	0.88
B020603C	0.87
B020603D	0.73
B020603E	0.86
B020603M	0.84
H803401N	0.83
H803401M	0.78
B020901B	0.93
B020901C	0.94
B020901D	0.95
B020901E	0.81
B020901M	0.81
H804001B	0.92
H804001C	0.94
H804001D	0.97
H804001E	0.97
H804001F	0.91
H804001M	0.90
G803001B	0.94
G803001C	0.93
G803001D	0.95
G803001E	0.98
G803001F	0.95
G803001M	0.89
B021001B	0.93
B021001C	0.92
B021001D	0.92
B021001M	0.91
B021002B	0.88
B021002C	0.85
B021002D	0.91
B021002M	0.93
B021003B	0.90
B021003C	0.88
B021003D	0.88
B021003M	0.86
B021004B	0.91
B021004C	0.89
B021004D	0.91
B021004M	0.84
B021005B	0.94
B021005C	0.95
B021005D	0.94
B021005M	0.90
B021006B	0.90
B021006C	0.88
B021006D	0.89
B021006M	0.88
B021007B	0.88
B021007C	0.88
B021007D	0.87
B021007M	0.92
H803303N	0.81
H803303I	0.74
H803303M	0.87
H803304N	0.81
H803304I	0.76
H803304M	0.87
H803305N	0.94
H803305I	0.71
H803201B	0.90
H803201C	0.93
H803201D	0.92
H803201E	0.87
H803201M	0.93
H803202B	0.90
H803202C	0.95
H803202D	0.97
H803202E	0.89
H803202M	0.94
H803203B	0.93
H803203C	0.95
H803203D	0.98
H803203E	0.89
H803203M	0.95
H803206B	0.98
H803206C	0.98
H803206D	0.98
H803206E	0.95
H803206M	0.95
C046201M	0.85
C046202M	0.95
C046203M	0.97
C046207M	0.97
C046208M	0.91
C046209M	0.93
C046210M	0.93
C046211M	0.86
C046212M	0.94
C046301B	0.89
C046301I	0.91
C046301M	0.91
C046302B	0.86
C046302I	0.88
C046302M	0.89
C046303B	0.86
C046303I	0.88
C046303M	0.91
C046304B	0.88
C046304I	0.86
C046304M	0.90
C038101A	0.89
C038101M	0.89
C046501B	0.89
C046501C	0.90
C046501D	0.89
C046501E	0.89
C046501F	0.93
C046501M	0.90
C038301N	0.89
C038301M	0.92
C043801B	0.88
C043801C	0.89
C043801D	0.93
C043801E	0.91
C043801F	0.89
C043801G	0.90
C043801H	0.89
C043801M	0.89
C046610B	0.93
C046610M	0.94
C046701B	0.89
C046701C	0.90
C046701D	0.89
C046701E	0.87
C046701F	0.89
C046701G	0.89
C046701H	0.90
C046701M	0.89
C044004B	0.91
C044004C	0.93
C044004D	0.93
C044004E	0.89
C044004G	0.90
C044004H	0.93
C044004M	0.92
C046702B	0.89
C046702C	0.86
C046702D	0.90
C046702E	0.89
C046702H	0.91
C046702M	0.93
C046703B	0.90
C046703C	0.89
C046703D	0.90
C046703E	0.89
C046703F	0.89
C046703M	0.93
C044007B	0.91
C044007C	0.90
C044007D	0.88
C044007E	0.89
C044007F	0.90
C044007G	0.89
C044007H	0.90
C044007M	0.92
C047401A	0.87
C047401M	0.91
C047501B	0.87
C047501C	0.91
C047501D	0.92
C047501E	0.90
C047501F	0.91
C047501G	0.92
C047501H	0.90
C047501M	0.95
C047601B	0.91
C047601M	0.93
C047701B	0.87
C047701M	0.93
C047702B	0.86
C047702M	0.93
C047801B	0.88
C047801C	0.91
C047801D	0.89
C047801E	0.93
C047801F	0.94
C047801M	0.94
C047802B	0.88
C047802C	0.89
C047802D	0.95
C047802E	0.89
C047802F	0.89
C047802M	0.91
C047803B	0.88
C047803C	0.88
C047803D	0.89
C047803E	0.89
C047803F	0.83
C047803M	0.92
C047901B	0.91
C047901C	0.89
C047901D	0.88
C047901E	0.90
C047901F	0.88
C047901M	0.90
C047902B	0.88
C047902C	0.90
C047902D	0.90
C047902E	0.91
C047902F	0.91
C047902M	0.89
C047903B	0.88
C047903C	0.88
C047903D	0.87
C047903E	0.87
C047903F	0.81
C047903M	0.91
C048101B	0.89
C048101I	0.88
C048101M	0.91
C048201B	0.87
C048201I	0.85
C048201M	0.97
C048202B	0.90
C048202I	0.87
C048202M	0.98
C048203B	0.87
C048203I	0.87
C048203M	0.98
C048204B	0.88
C048204I	0.92
C048204M	0.99
C048205B	0.91
C048205I	0.94
C048205M	0.97
C048206B	0.89
C048206I	0.88
C048206M	0.98
C048207B	0.87
C048207I	0.86
C048301B	0.92
C048301C	0.94
C048301D	0.93
C048301M	0.99
C048302B	0.91
C048302C	0.93
C048302D	0.90
C048302M	0.98
C048303B	0.88
C048303C	0.88
C048303D	0.87
C048303M	0.93
C048304B	0.90
C048304C	0.90
C048304D	0.92
C048304M	0.98
C048305B	0.89
C048305C	0.90
C048305D	0.89
C048305M	0.97
C048401B	0.85
C048402B	0.87
C048402M	0.94
C048403B	0.87
C048403M	0.97
C048404B	0.90
C048404M	0.98
C048405B	0.87
C048405M	0.97
C048406B	0.86
C048406M	0.97
C048407B	0.87
C048408B	0.86
C048408M	0.96
C048409B	0.87
C048410B	0.87
C048501B	0.87
C048501M	0.94
C048502B	0.88
C048502M	0.95
C048503B	0.87
C048503M	0.94
C048504B	0.88
C048504M	0.95
C048505B	0.89
C048505M	0.95
C048601B	0.87
C048602B	0.88
C048602M	0.98
C048603B	0.86
C048603M	0.95
C048701B	0.88
C048701M	0.98
C048702B	0.88
C048702M	0.91
C048703B	0.84
C048703M	0.96
C048704B	0.87
C048704M	0.97
C047001C	0.89
C047001D	0.90
C047001E	0.96
C047001F	0.95
C047001G	0.91
C047101B	0.89
C047101C	0.96
C047101D	0.93
C047101E	0.91
C047102B	0.90
C047102C	0.89
C047102D	0.91
C047102M	0.95
C047201M	0.91
C047202M	0.91
C047203M	0.92
C047204M	0.89
C047206M	0.90
C047207M	0.90
C047208M	0.89
C047209M	0.90
C047210M	0.92
C047301B	0.90
C047301C	0.90
C047301D	0.91
C047301E	0.93
C047301F	0.91
C047301G	0.87
C047301H	0.88
C047301M	0.95
C047302B	0.90
C047302C	0.91
C047302D	0.93
C047302E	0.93
C047302F	0.88
C047302G	0.92
C047302M	0.95
C047303B	0.92
C047303C	0.94
C047303D	0.90
C047303E	0.91
C047303F	0.89
C047303M	0.95
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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