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Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

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

   

–

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