Table 5 Correlations between dimensions in five-dimensional 3PL/GPCM for math grade 8 data
From: Assessment of fit of item response theory models used in large-scale educational survey assessments
| 2 | 3 | 4 | 5 | |
|---|---|---|---|---|
| 1. Number properties and operations | .97 | .93 | .96 | .95 |
| 2. Measurement | – | .96 | .96 | .94 |
| 3. Geometry | – | .93 | .92 | |
| 4. Data analysis and probability | – | .94 | ||
| 5. Algebra | – |