birtr-package | The R Package for "The Basics of Item Response Theory Using R" |

ability | Ability Estimation |

birtr | The R Package for "The Basics of Item Response Theory Using R" |

groupinv | Group Invariance of Item Parameters |

icc | Item Characteristic Curve |

icccal | Item Characteristic Curve Calculations |

iccfit | Item Characteristic Curve Fitting |

iccplot | Item Characteristic Curve Plot |

rasch | Rasch Model Calibration |

tcc | Test Characteristic Curve |

tif | Test Information Function |