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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 1996 scores and 1996 transformed provisional scores, grade 8 mathematics assessment: 2000
| Scale | Statistic | Original 1996 estimate | 1996 transformed provisional estimate | Difference between the provisional estimate and the original estimate |
|---|---|---|---|---|
| Composite scale | Mean | 271.96 | 271.96 | 0.00 |
| 10th percentile | 224.01 | 223.52 | -0.49 | |
| 25th percentile | 248.40 | 248.37 | -0.03 | |
| 50th percentile | 273.40 | 273.77 | 0.36 | |
| 75th percentile | 297.61 | 297.69 | 0.08 | |
| 90th percentile | 317.49 | 317.79 | 0.30 | |
| Number sense, properties, and operations | Mean | 273.95 | 273.95 | 0.00 |
| 10th percentile | 226.92 | 226.36 | -0.56 | |
| 25th percentile | 250.76 | 250.68 | -0.08 | |
| 50th percentile | 275.61 | 275.78 | 0.17 | |
| 75th percentile | 299.38 | 299.46 | 0.08 | |
| 90th percentile | 318.39 | 318.51 | 0.13 | |
| Measurement | Mean | 269.70 | 269.70 | 0.00 |
| 10th percentile | 207.51 | 206.97 | -0.54 | |
| 25th percentile | 239.32 | 239.49 | 0.17 | |
| 50th percentile | 271.75 | 272.57 | 0.82 | |
| 75th percentile | 302.73 | 302.68 | -0.04 | |
| 90th percentile | 329.01 | 328.70 | -0.32 | |
| Geometry and spatial sense | Mean | 269.28 | 269.28 | 0.00 |
| 10th percentile | 226.10 | 226.12 | 0.02 | |
| 25th percentile | 247.99 | 247.87 | -0.11 | |
| 50th percentile | 270.58 | 270.40 | -0.17 | |
| 75th percentile | 291.90 | 292.28 | 0.38 | |
| 90th percentile | 310.88 | 311.11 | 0.23 | |
| Data analysis, statistics, and probability | Mean | 272.26 | 272.26 | 0.00 |
| 10th percentile | 214.31 | 213.82 | -0.49 | |
| 25th percentile | 244.74 | 244.26 | -0.47 | |
| 50th percentile | 275.24 | 275.09 | -0.16 | |
| 75th percentile | 302.83 | 303.01 | 0.18 | |
| 90th percentile | 325.96 | 325.97 | 0.01 | |
| Algebra and functions | Mean | 273.30 | 273.30 | 0.00 |
| 10th percentile | 227.19 | 226.87 | -0.32 | |
| 25th percentile | 250.01 | 250.18 | 0.18 | |
| 50th percentile | 273.84 | 274.24 | 0.40 | |
| 75th percentile | 298.08 | 298.08 | 0.00 | |
| 90th percentile | 318.94 | 318.66 | -0.29 | |
| SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2000 Mathematics Assessment. | ||||
Last updated 24 March 2008 (GF)