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

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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.

Author
Jorge Gonzalez Burgos [cre, aut], Daniel Acu<c3><b1>a Leon [ctb]
Date of publication
2015-11-13 08:55:45
Maintainer
Jorge Gonzalez Burgos <jgonzale@mat.puc.cl>
License
GPL (>= 2)
Version
1.2.1
URLs

View on CRAN

Man pages

ACTmKB
Scores on two 40-items ACT mathematics test forms
bandwidth
Automatic selection of the bandwidth parameter 'h'
CBdata
Observed (raw) score values for two different tests
eqp.eq
The equipercentile method of equating
fitmeasures
Functions to assess model fitting.
irt.link
IRT parameter linking methods
KB36
Data on two 36-items test forms
KB36.1PL
Difficulty parameter estimates for KB36 data under a 1PL...
ker.eq
The Kernel method of test equating
le.eq
Local equating methods
lin.eq
The linear method of equating
loglin.smooth
Pre-smoothing using log-linear models.
Math20EG
Scores on two 20-items mathematics tests.
Math20SG
Bivariate score frequencies on two 20-items mathematics...
mea.eq
The mean method of equating
PREp
Percent relative error
SEED
Standard error of equating difference
SNSequate-package
Standard and Nonstandard Statistical Models and Methods for...

Files in this package

SNSequate
SNSequate/inst
SNSequate/inst/CITATION
SNSequate/NAMESPACE
SNSequate/data
SNSequate/data/KB36.1PL.rda
SNSequate/data/CBdata.rda
SNSequate/data/KB36.rda
SNSequate/data/Math20EG.rda
SNSequate/data/ACTmKB.rda
SNSequate/data/Math20SG.rda
SNSequate/R
SNSequate/R/eqp.utils.R
SNSequate/R/cdf.Dist.R
SNSequate/R/lw.dist.R
SNSequate/R/iccs.R
SNSequate/R/PREp.R
SNSequate/R/le.eq.R
SNSequate/R/irt.link.R
SNSequate/R/EE.R
SNSequate/R/ker.eq.R
SNSequate/R/helperfuncs.R
SNSequate/R/mea.eq.R
SNSequate/R/target.R
SNSequate/R/bandwidth.R
SNSequate/R/SEED.R
SNSequate/R/fitmeasures.R
SNSequate/R/eqp.eq.R
SNSequate/R/lin.eq.R
SNSequate/R/loglin.smooth.R
SNSequate/R/LE.R
SNSequate/R/Pr.R
SNSequate/MD5
SNSequate/DESCRIPTION
SNSequate/man
SNSequate/man/Math20SG.Rd
SNSequate/man/ker.eq.Rd
SNSequate/man/SEED.Rd
SNSequate/man/mea.eq.Rd
SNSequate/man/bandwidth.Rd
SNSequate/man/fitmeasures.Rd
SNSequate/man/eqp.eq.Rd
SNSequate/man/loglin.smooth.Rd
SNSequate/man/irt.link.Rd
SNSequate/man/lin.eq.Rd
SNSequate/man/KB36.Rd
SNSequate/man/PREp.Rd
SNSequate/man/SNSequate-package.Rd
SNSequate/man/CBdata.Rd
SNSequate/man/le.eq.Rd
SNSequate/man/ACTmKB.Rd
SNSequate/man/Math20EG.Rd
SNSequate/man/KB36.1PL.Rd