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NAEP Assessment Sample Design → NAEP 2022 Sample Design → Sample Design for the 2022 National Long-Term Trend Assessment → Selection of Primary Sampling Units (PSUs) for the 2022 Assessment → Primary Sampling Unit (PSU) Frame Stratification for the 2022 Assessment → Final Primary Sampling Unit (PSU) Strata for the 2022 Assessment → Stratification for Midwest Non-Metropolitan Noncertainty Primary Sampling Units
NAEP Technical DocumentationStratification for Midwest Non-Metropolitan Noncertainty Primary Sampling Units
The following table provides the definition, number of PSUs, and size of each noncertainty PSU stratum in the Midwest non-metropolitan primary stratum. Columns 2 and 3 show the primary and secondary 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 | PSUs | Measure of size |
|---|---|---|---|---|
| Total | † | † | 228 | 3,388,214 |
| 1 | Percentage of children below the poverty line <= 16.1 | Percentage of children below the poverty line <= 13.7 | 41 | 573,682 |
| 2 | Percentage of children below the poverty line <= 16.1 | Percentage of children below the poverty line > 13.7 | 36 | 580,649 |
| 3 | Percentage of children below the poverty line (16.1-20.7] | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth <= 5.4 | 38 | 556,318 |
| 4 | Percentage of children below the poverty line (16.1-20.7] | Percentage of Black, Hispanic, American Indian/Alaska Native, or Native Hawaiian/Other Pacific Islander youth > 5.4 | 37 | 560,613 |
| 5 | Percentage of children below the poverty line > 20.7 | Percentage of children below the poverty line <= 24 | 38 | 553,089 |
| 6 | Percentage of children below the poverty line > 20.7 | Percentage of children below the poverty line > 24 | 38 | 563,863 |
| Mean | † | † | † | 564,702 |
| † Not applicable. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2022 Long-Term Trend Assessment. | ||||
Last updated 18 July 2024 (SK)