betafunctions: Functions for Working with Two- And Four-Parameter Beta Probability Distributions and Psychometric Analysis of Classifications

Package providing a number of functions for working with Two- and Four-parameter Beta and closely related distributions (i.e., the Gamma- Binomial-, and Beta-Binomial distributions). Includes, among other things: - d/p/q/r functions for Four-Parameter Beta distributions and Generalized "Binomial" (continuous) distributions, and d/p/r- functions for Beta- Binomial distributions. - d/p/q/r functions for Two- and Four-Parameter Beta distributions parameterized in terms of their means and variances rather than their shape-parameters. - Moment generating functions for Binomial distributions, Beta-Binomial distributions, and observed value distributions. - Functions for estimating classification accuracy and consistency, making use of the Classical Test-Theory based 'Livingston and Lewis' (L&L) and 'Hanson and Brennan' approaches. A shiny app is available, providing a GUI for the L&L approach when used for binary classifications. For url to the app, see documentation for the LL.CA() function. Livingston and Lewis (1995) <doi:10.1111/j.1745-3984.1995.tb00462.x>. Lord (1965) <doi:10.1007/BF02289490>. Hanson (1991) <>.

Version: 1.9.0
Published: 2024-03-06
DOI: 10.32614/CRAN.package.betafunctions
Author: Haakon Eidem Haakstad
Maintainer: Haakon Eidem Haakstad <h.e.haakstad at>
License: CC0
NeedsCompilation: no
Materials: README NEWS
In views: Distributions, Psychometrics
CRAN checks: betafunctions results


Reference manual: betafunctions.pdf


Package source: betafunctions_1.9.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): betafunctions_1.9.0.tgz, r-oldrel (arm64): betafunctions_1.9.0.tgz, r-release (x86_64): betafunctions_1.9.0.tgz, r-oldrel (x86_64): betafunctions_1.9.0.tgz
Old sources: betafunctions archive

Reverse dependencies:

Reverse imports: IRTest


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