Functions for Working with Two- And Four-Parameter Beta Probability Distributions

Package providing a number of functions for working with Two- and Four-parameter Beta and closely related distributions (i.e., the Gamma and Binomial distributions), including parameterization in terms of moments, and fitting of Beta distributions to vectors of values. Also includes functions for estimating classification accuracy, diagnostic performance, and consistency, making use of what is generally known as the 'Livingston and Lewis approach' in the psychometric literature as the foundational method, which makes extensive use of the Beta distribution. A shiny app is available, providing a GUI for the Livingston and Lewis approach. For link, see documentation for the LL.CA() function. Livingston and Lewis (1995) . Hanson (1991) < https://files.eric.ed.gov/fulltext/ED344945.pdf>. Tharwat (2020) .


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install.packages("betafunctions")

1.5.0 by Haakon Haakstad, 18 days ago


Browse source code at https://github.com/cran/betafunctions


Authors: Haakon Haakstad


Documentation:   PDF Manual  


Task views: Probability Distributions, Psychometric Models and Methods


CC0 license



See at CRAN