Contains methods for observed-score linking and equating under the single-group, equivalent-groups, and nonequivalent-groups with anchor test(s) designs. Equating types include identity, mean, linear, general linear, equipercentile, circle-arc, and composites of these. Equating methods include synthetic, nominal weights, Tucker, Levine observed score, Levine true score, Braun/Holland, frequency estimation, and chained equating. Plotting and summary methods, and methods for multivariate presmoothing and bootstrap error estimation are also provided.

Package: | equate |

Version: | 2.0-6 |

Date: | 2017-01-09 |

Depends: | R (>= 3.3.2) |

License: | GPL-3 |

Index:

ACTmath | ACT Mathematics Test Scores |

KBneat | Test Scores Under a NEAT design |

PISA | Programme for International Student Assessment 2009 USA Data |

descriptives | Descriptive Statistics for Frequency Tables |

percentiles | Percentile Ranks and Cumulative Frequencies for Frequency Tables |

equate | Observed Score Linking and Equating |

composite | Composite Linking and Equating |

bootstrap | Bootstrap Equating Error |

freqtab | Frequency Distribution Tables |

presmoothing | Frequency Distribution Presmoothing |

plot.freqtab | Plotting Frequency Distributions |

plot.equate | Plotting Equating Results |

Further information is available in the following vignettes:

`equatevignette` | equate vignette (source, pdf) |

The package vignette provides an introduction to linking and equating and includes
descriptions of the supported equating methods and examples. The help page
for the main function of the package, `equate`

, contains
additional examples.

Anthony Albano <tony.d.albano@gmail.com>

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