Scored                  Binary (true/false) responses to a test
Scored2pl               Example item parameters
Unscored                Original, unscored multiple-choice responses to
                        a test
api                     The Z3 appropriateness index
dpv                     Draw plausible values
eap                     EAP estimation of ability
est                     Estimate item parameters
iif                     Item information function
irf                     Item response function
irtoys-package          Estimate and plot IRT models for binary
                        responses
itf                     Test item fit
mlebme                  Maximum likelihood and Bayes Modal estimation
                        of ability
normal.qu               Normal quadrature points and weights
npp                     Non-parametric characteristic curves
plot.iif                A plot method for item information functions
plot.irf                A plot method for item response functions
plot.tif                A plot method for test information functions
plot.trf                A plot method for test response functions
qrs                     Quantiles of the ranked sum scores
read.ip.bilog           Read in parameter estimates
read.ip.icl             Read in parameter estimates
read.qu.icl             Read in quadrature
read.resp               Read responses from a file
sca                     Linear transformation of the IRT scale
sco                     Score a multiple choice test
scp                     Plot observed and predicted scores against
                        ability
sim                     Simulate response data
tet                     Approximate tetrachoric correlation matrix
tgp                     Non-parametric option curves
tia                     Elementary test-item analysis
tif                     Test information function
trf                     Test response function
tsc                     True scores with standard errors
wle                     Bias-corrected (Warm's) estimates of ability
