SNSequate: Standard and Nonstandard Statistical Models and Methods for Test Equating

Contains functions to perform various models and methods for test equating. It currently implements the traditional mean, linear and equipercentile equating methods, as well as the mean-mean, mean-sigma, Haebara and Stocking-Lord IRT linking methods. It also supports newest methods such that local equating, kernel equating (using Gaussian, logistic and uniform kernels) with presmoothing, and IRT parameter linking methods based on asymmetric item characteristic functions. Functions to obtain both standard error of equating (SEE) and standard error of equating difference between two equating functions (SEED) are also implemented for the kernel method of equating.

Install the latest version of this package by entering the following in R:
AuthorJorge Gonzalez Burgos [cre, aut], Daniel Leon Acuna [ctb]
Date of publication2017-03-09 15:23:56
MaintainerJorge Gonzalez Burgos <>
LicenseGPL (>= 2)

View on CRAN


ACTmKB Man page
bandwidth Man page
bandwidth.default Man page
BNP.eq Man page
BNP.eq.predict Man page
CBdata Man page
contaminate_sample Man page
eqp.eq Man page
eqp.eq.default Man page
gof Man page
irt.eq Man page
irt.eq.default Man page Man page Man page
KB36 Man page
KB36.1PL Man page
KB36_t Man page
ker.eq Man page
ker.eq.default Man page
le.eq Man page
le.eq.default Man page
lin.eq Man page
lin.eq.default Man page
loglin.smooth Man page
loglin.smooth.default Man page
Math20EG Man page
Math20SG Man page
mea.eq Man page
mea.eq.default Man page
pasted_table_to_df Man page
PREp Man page
PREp.default Man page
rowBlockSum Man page
SEED Man page
SEED.default Man page
sim_unimodal Man page
SNSequate Man page
SNSequate-package Man page

Questions? Problems? Suggestions? or email at

Please suggest features or report bugs with the GitHub issue tracker.

All documentation is copyright its authors; we didn't write any of that.