IRTpp-package | IRTpp : Item Response Theory Implemented in R and Cpp |
alpha.c | Cronbach-Mesbah Curve |
alpha.cronbach | Cronbach's alpha |
an.parallel | Parallel Analysis |
biserial.cor | Biserial Correlation |
gutt | Guttman's Lambda |
individual.traits | Estimate the latent traits. |
information | Test or Item information |
irtpp | Estimate a test item parameters. |
irtpp.model | Valid model |
irtpp.models | Available models |
model.transform | Model transformations |
normalize | Normalize a vector |
orlando_itemf | Orlando's statistic |
parameter.list | Parameter list form |
parameter.matrix | Parameter matrix form |
pattern.expand | Expansion of patterns |
phi | Phi coefficient of correlation |
plotenvelope | Confidence bands |
plotevenlope | Confidence bands |
polyserial.cor | Polyserial correlation |
prob.2pl | 2PL fast probability function |
prob.3pl | 3PL fast probability function |
probability.1pl | 1PL probability function |
probability.2pl | 2PL probability function |
probability.3pl | 3PL probability function |
rtnorm | Truncated normal simulation |
SimulateItemParameters | Simulates item parameters for UIRT models. |
simulateItemParameters | Simulates item parameters for UIRT models. |
simulateTest | Simulates a test |
simulateTest.file | This function simulates tests according to a IRT model. |
simulateTestMD | Simulate test Multidimensional |
test.plot | Plot a test or an item. |
Yule | Yule coefficient of correlation |
z3_itemf | Z3 statistic. |
z3_personf | Z3 Person fit statistic |