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betafunctions  

Functions for Working with Two- And Four-Parameter Beta Probability Distributions and Psychometric Analysis of Classifications
View on CRAN: Click here


Download and install betafunctions package within the R console
Install from CRAN:
install.packages("betafunctions")

Install from Github:
library("remotes")
install_github("cran/betafunctions")

Install by package version:
library("remotes")
install_version("betafunctions", "1.9.0")



Attach the package and use:
library("betafunctions")
Maintained by
Haakon Eidem Haakstad
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2020-05-02
Latest Update: 2024-03-06
Description:
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) . Lord (1965) . Hanson (1991) .
How to cite:
Haakon Eidem Haakstad (2020). betafunctions: Functions for Working with Two- And Four-Parameter Beta Probability Distributions and Psychometric Analysis of Classifications. R package version 1.9.0, https://cran.r-project.org/web/packages/betafunctions. Accessed 27 Aug. 2026.
Previous versions and publish date:
(2026-07-09 07:21), 1.0.2 (2020-05-02 15:10), 1.1.0 (2020-05-10 06:40), 1.2.0 (2020-06-10 23:30), 1.2.1 (2020-09-02 13:00), 1.2.2 (2020-09-16 12:00), 1.3.0 (2020-10-04 19:20), 1.4.0 (2020-10-18 23:40), 1.4.2 (2020-12-04 14:50), 1.4.3 (2021-01-31 06:30), 1.4.4 (2021-02-06 09:00), 1.5.0 (2021-04-30 10:50), 1.6.0 (2021-08-19 20:00), 1.6.1 (2021-09-20 12:30), 1.7.0 (2022-04-12 01:22), 1.8.0 (2022-10-13 14:02), 1.8.1 (2022-12-04 13:40)
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