Graphs

Pie chart Bar chart Histogram Line chart Scatterplot Kernel density estimates Wright Map Nonparametric ICCs IRT plots (ICC, TCC, Information,…

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DIF Analysis

Currently based on Mantel-Haenszel procedure Effect size computation (ETS Delta or standardized mean difference) ETS DIF classification Nonparametric IRT option…

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Test Scaling

Sum score, average score, percentile ranks, Kelley regressed scores, and normalized scores Linear transformations of scale scores Save scale scores…

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