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Fits Rasch models (RM), linear logistic test models (LLTM), rating scale model (RSM), linear rating scale models (LRSM), partial credit models (PCM), and linear partial credit models (LPCM). Missing values are allowed in the data matrix. Additional features are the ML estimation of the person parameters, Andersen's LR-test, item-specific Wald test, Martin-Loef-Test, nonparametric Monte-Carlo Tests, itemfit and personfit statistics including infit and outfit measures, ICC and other plots, automated stepwise item elimination, simulation module for various binary data matrices.
| Version: | 1.0-6 |
| Depends: | R (≥ 3.5.0) |
| Imports: | graphics, grDevices, stats, methods, MASS, splines, Matrix, lattice, colorspace, psych |
| Published: | 2024-03-15 |
| Author: | Patrick Mair [cre, aut], Thomas Rusch [aut], Reinhold Hatzinger [aut], Marco J. Maier [aut], Rudolf Debelak [ctb] |
| Maintainer: | Patrick Mair <mair at fas.harvard.edu> |
| License: | GPL-3 |
| NeedsCompilation: | yes |
| Citation: | eRm citation info |
| Materials: | NEWS |
| In views: | MissingData, Psychometrics |
| CRAN checks: | eRm results |
| Reference manual: | eRm.pdf |
| Vignettes: |
eRm Basics |
| Package source: | eRm_1.0-6.tar.gz |
| Windows binaries: | r-devel: eRm_1.0-6.zip, r-release: eRm_1.0-6.zip, r-oldrel: eRm_1.0-6.zip |
| macOS binaries: | r-release (arm64): eRm_1.0-6.tgz, r-oldrel (arm64): eRm_1.0-6.tgz, r-release (x86_64): eRm_1.0-6.tgz, r-oldrel (x86_64): eRm_1.0-6.tgz |
| Old sources: | eRm archive |
| Reverse depends: | iarm |
| Reverse imports: | mstDIF, tcl, whomds |
| Reverse suggests: | PP, pwrRasch, tmt |
| Reverse enhances: | immer |
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