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NAEP Analysis and Scaling → Scale Linking and Transformation to the Reporting Metric → The Transformation Equation → Comparisons of Distributions of Linking Samples for NAEP Assessments → Comparison means and percentiles of 1994 and provisional 1994 transformed scores, grade 12 geography assessment: 2001
| Scale | Statistic | Original 1994 estimate | Provisional 1994 transformed estimate | Difference between the provisional estimate and the original estimate |
|---|---|---|---|---|
| Composite | Mean | 284.56 | 284.56 | 0.00 |
| 10th percentile | 243.95 | 243.83 | -0.12 | |
| 25th percentile | 264.68 | 264.68 | -0.01 | |
| 50th percentile | 287.20 | 287.03 | -0.17 | |
| 75th percentile | 306.47 | 306.48 | 0.01 | |
| 90th percentile | 320.93 | 321.16 | 0.23 | |
| Space and place | Mean | 283.26 | 283.26 | 0.00 |
| 10th percentile | 236.98 | 236.92 | -0.06 | |
| 25th percentile | 260.10 | 260.55 | 0.46 | |
| 50th percentile | 286.02 | 285.90 | -0.12 | |
| 75th percentile | 308.36 | 308.26 | -0.10 | |
| 90th percentile | 325.47 | 325.47 | -0.01 | |
| Environment and society | Mean | 282.58 | 282.58 | 0.00 |
| 10th percentile | 247.11 | 247.39 | 0.28 | |
| 25th percentile | 265.26 | 265.50 | 0.24 | |
| 50th percentile | 284.86 | 284.86 | 0.00 | |
| 75th percentile | 301.61 | 301.36 | -0.25 | |
| 90th percentile | 314.51 | 314.46 | -0.05 | |
| Spatial dynamics and connections | Mean | 288.30 | 288.30 | 0.00 |
| 10th percentile | 247.50 | 247.37 | -0.14 | |
| 25th percentile | 268.42 | 268.48 | 0.06 | |
| 50th percentile | 290.90 | 290.84 | -0.06 | |
| 75th percentile | 310.03 | 309.97 | -0.06 | |
| 90th percentile | 324.75 | 324.60 | -0.15 | |
| SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2001 Geography Assessment. | ||||
Last updated 24 March 2008 (GF)
