equate-package: Statistical Methods for Test Score Equating
Description
The equate package contains functions for non-IRT equating under both random groups and nonequivalent groups with anchor test designs. Mean, linear, equipercentile and circle-arc equating are supported, as are methods for univariate and bivariate presmoothing of score distributions. Specific equating methods currently supported include synthetic, nominal weights, Tucker, Levine observed score, Levine true score, Braun/Holland, frequency estimation, and chained equating.Details
ll{
Package: equate
Version: 1.1-3
Date: 2011-2-10
Depends: R (>= 2.10.0)
License: GPL (>= 2)
}
Index:
ACTmath ACT Mathematics Test Scores
KBneat Test Scores under a NEAT design
descript Descriptive Statistics for a Frequency Table
equate Statistical Equating
freqavg Frequency Adjusting and Averaging
freqtab Frequency Tabulation
loglinear Loglinear Smoothing
plot.freqtab Plotting of Frequency Distributions
px Percentile Rank and Cumulative Distribution
Functions
se.boot Bootstrap Standard Errors of Equating
Further information is available in the following vignettes:
ll{
equatevignette equate vignette (source, pdf)
}
The package vignette provides an introduction to statistical equating and includes descriptions of the supported equating methods and examples. The help page for the main function of the package, equate, contains additional examples.