Package index • easyRasch2

Item Fit

Conditional item fit statistics with simulation-based cutoffs

RMitemInfit(): Conditional Item Infit MSQ
RMitemInfitCutoff(): Simulation-Based Infit MSQ Cutoff Determination
RMitemInfitCutoffPlot(): Plot Distribution of Simulated Infit and Outfit MSQ Values
RMitemInfitMI(): Conditional Item Infit MSQ for Multiply Imputed Data
RMitemInfitCutoffMI(): Simulation-Based Infit MSQ Cutoff Determination for Multiply Imputed Data
RMitemICCPlot(): Conditional Item Characteristic Curves
RMitemCatProb(): Item Category Probability Curves

Item-restscore correlation analysis

Q3 residual correlations & partial gammal LD with simulation-based cutoffs

RMlocdepQ3(): Q3 Residual Correlations for Local Dependence Assessment
RMlocdepQ3Cutoff(): Simulation-Based Q3 Cutoff Determination
RMlocdepQ3Plot(): Plot Distribution of Simulated Q3 Residual Correlations
RMlocdepGamma(): Partial Gamma Local Dependence Analysis
RMlocdepGammaCutoff(): Simulation-Based Partial Gamma LD Cutoff Determination
RMlocdepGammaPlot(): Plot Distribution of Simulated Partial Gamma LD Values

DIF assessment functions

RMdifLR(): DIF analysis via Andersen's likelihood-ratio test
RMdifTree(): Tree-based DIF analysis with effect-size classification
RMdifGamma(): Partial Gamma DIF Analysis
RMdifGammaCutoff(): Simulation-Based Partial Gamma DIF Cutoff Determination
RMdifGammaPlot(): Plot Distribution of Simulated Partial Gamma DIF Values

PCA of residuals, and more to come

RMdimCFACutoff(): Posterior-predictive CFA fit-index cutoffs under PCM unidimensionality
RMdimCFAPlot(): Plot observed CFA fit indices against the simulated null distribution
RMdimResidualPCA(): PCA of Standardized Rasch Residuals
RMdimResidualPCACutoff(): Simulation-based Cutoff for First-Contrast Eigenvalue
RMdimMartinLof(): Martin-Lof Test of Unidimensionality
RMdimMartinLofResiduals(): Standardised Residuals from the Joint Subscore Distribution

Targeting and other plots/tables

Package builtin data