equate-package: Observed-Score Linking and Equating
Description
Contains methods for observed-score linking and equating under the single-group, equivalent-groups, and nonequivalent-groups with anchor test(s) designs. Equating types include identity, mean, linear, general linear, equipercentile, circle-arc, and composites of these. Equating methods include synthetic, nominal weights, Tucker, Levine observed score, Levine true score, Braun/Holland, frequency estimation, and chained equating. Plotting and summary methods, and methods for multivariate presmoothing and bootstrap error estimation are also provided.Details
ll{
Package: equate
Version: 2.0-3
Date: 2014-10-21
Depends: R (>= 3.0.0)
License: GPL (>= 2)
}
Index:
ACTmath ACT Mathematics Test Scores
KBneat Test Scores under a NEAT design
PISA Programme for International Student Assessment 2009 USA Data
descriptives Descriptive Statistics for Frequency Tables
percentiles Percentile ranks and Cumulative Frequencies for Frequency Tables
equate Observed Score Linking and Equating
composite Composite Linking and Equating
bootstrap Bootstrap Equating Error
freqtab Frequency Distribution Tables
presmoothing Frequency Distribution Presmoothing
plot.freqtab Plotting Frequency Distributions
plot.equate Plotting Equating Results
Further information is available in the following vignettes:
ll{
equatevignette equate vignette (source, pdf)
}
The package vignette provides an introduction to linking and 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.