[R] [R-pkgs] New package: equate

Tony Albano tony.d.albano at gmail.com
Fri Mar 26 17:42:29 CET 2010

The 'equate' package, designed for statistical equating (non-IRT) of 
test score distributions, is available on CRAN:

The package was developed for both research and teaching purposes, and 
will hopefully be useful for both. A vignette introduces the basic 
concepts and terminology of traditional equating, and demonstrates the 
functionality of the package.

Mean, linear, equipercentile, and circle-arc equating are supported and 
specific methods include Tucker, Levine observed score, Levine true 
score, Braun/Holland, frequency estimation, and chained equating (linear 
and nonlinear). Univariate and bivariate presmoothing are also 
supported, as is estimation of standard error via bootstrapping.

Additional info can be found at the rwiki:

Suggestions are much appreciated!
Tony Albano       

University of Minnesota
193 Education Sciences Building
56 East River Road
Minneapolis, MN 55455

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