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NAEP Assessment Sample Design → NAEP 2020 Sample Design → Selection of Primary Sampling Units (PSUs) for the 2020 Assessment → Primary Sampling Unit (PSU) Frame Stratification for the 2020 Assessment → Final Primary Sampling Unit (PSU) Strata for the 2020 Assessment → Stratification for South Metropolitan Noncertainty Primary Sampling Units
NAEP Technical DocumentationStratification for South Metropolitan Noncertainty Primary Sampling Units
The following table provides the definition, number of PSUs, and size of each noncertainty PSU stratum in the South metropolitan primary stratum. Columns 2 through 6 show the characteristics used to define the strata along with their respective cutoffs. The size of each stratum is given in the last column and is in terms of the number of youths (persons 17 years of age and younger).
| Stratum | Primary stratifier | Secondary stratifier | Tertiary stratifier | Quaternary stratifier | Quinary stratifier | PSUs | Measure of size |
|---|---|---|---|---|---|---|---|
| Total | † | † | † | † | † | 141 | 13,175,373 |
| 1 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 28.2 | Per capita household income <= $23,025 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 14.9 | 14 | 533,826 |
| 2 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 28.2 | Per capita household income <= $23,025 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth > 14.9 | 12 | 509,782 |
| 3 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 28.2 | Per capita household income ($23,025-$25,326] | Percentage of female-headed households <= 12.1 | 6 | 539,598 |
| 4 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 28.2 | Per capita household income ($23,025-$25,326] | Percentage of female-headed households > 12.1 | 6 | 543,970 |
| 5 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 28.2 | Per capita household income ($25,326-$27,540] | Percentage of female-headed households <= 11.8 | 6 | 456,746 |
| 6 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 28.2 | Per capita household income ($25,326-$27,540] | Percentage of female-headed households > 11.8 | 3 | 652,881 |
| 7 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 28.2 | Per capita household income ($27,540-$28,621] | † | 3 | 575,617 |
| 8 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 28.2 | Per capita household income > $28,621 | † | 5 | 535,472 |
| 9 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth (28.2-30.6] | Percentage of female-headed households <= 13 | † | 4 | 564,610 |
| 10 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth (28.2-30.6] | Percentage of female-headed households > 13 | † | 6 | 545,366 |
| 11 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth (30.6-33.2] | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 32.2 | † | 5 | 574,325 |
| 12 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth (30.6-33.2] | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth > 32.2 | † | 2 | 544,937 |
| 13 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth > 33.2 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 36.9 | † | 6 | 531,652 |
| 14 | Percentage of female-headed households <= 16.9 | Percentage of renters <= 33.5 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth > 33.2 | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth > 36.9 | † | 6 | 533,107 |
| 15 | Percentage of female-headed households <= 16.9 | Percentage of renters > 33.5 | Per capita household income <= $23,655 | Percentage of renters <= 36.9 | † | 10 | 566,668 |
| 16 | Percentage of female-headed households <= 16.9 | Percentage of renters > 33.5 | Per capita household income <= $23,655 | Percentage of renters > 36.9 | † | 11 | 558,330 |
| 17 | Percentage of female-headed households <= 16.9 | Percentage of renters > 33.5 | Per capita household income ($23,655-$26,682] | Percentage of female-headed households <= 14.2 | † | 6 | 576,105 |
| 18 | Percentage of female-headed households <= 16.9 | Percentage of renters > 33.5 | Per capita household income ($23,655-$26,682] | Percentage of female-headed households > 14.2 | † | 4 | 566,865 |
| 19 | Percentage of female-headed households <= 16.9 | Percentage of renters > 33.5 | Per capita household income > $26,682 | Percentage of renters <= 38.7 | † | 3 | 540,457 |
| 20 | Percentage of female-headed households <= 16.9 | Percentage of renters > 33.5 | Per capita household income > $26,682 | Percentage of renters > 38.7 | † | 2 | 608,592 |
| 21 | Percentage of female-headed households > 16.9 | Per capita household income <= $21,548 | Percentage of renters <= 31.7 | † | † | 4 | 560,596 |
| 22 | Percentage of female-headed households > 16.9 | Per capita household income <= $21,548 | Percentage of renters > 31.7 | † | † | 9 | 549,613 |
| 23 | Percentage of female-headed households > 16.9 | Per capita household income > $21,548 | Percentage of female-headed households <= 18.7 | † | † | 5 | 501,582 |
| 24 | Percentage of female-headed households > 16.9 | Per capita household income > $21,548 | Percentage of female-headed households > 18.7 | † | † | 3 | 504,676 |
| Mean | † | † | † | † | † | † | 548,974 |
| † Not applicable. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2020 Long-Term Trend Assessment. | |||||||
Last updated 07 March 2024 (SK)