plotINFO

ermobject

A string denoting the type of information to be plotted. Currently supports <code>"item"</code>, <code>"test"</code> and <code>"both"</code> (default).

type

Supporting or sampling points on the latent trait.

theta

Further arguments.
    <code>xlab</code> sets the label of the $x$ axis.
    <code>ylabI</code> and <code>ylabT</code> control the labeling of the item or test information plot.
    <code>mainI</code> and <code>mainT</code> set the titles for item/test in

Calculates and plots the individual or summed item information by Samejima (1969)

eRm 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-Löf-Test, nonparametric Monte-Carlo Tests, itemfit and personfit statistics including infit and outfit measures, various ICC and related plots, automated stepwise item elimination, simulation module for various binary data matrices.  An eRm platform is provided at R-forge (see URL).

plotINFO: Plot Information For `'eRm'` objects

Description

Usage

Arguments

encoding

References

See Also

Examples