Package: betafunctions
Type: Package
Title: Two- And Four-Parameter Beta Distributions and Classification
        Accuracy and Consistency
Version: 2.0.0
Authors@R: person("Haakon Eidem", "Haakstad", email = "h.e.haakstad@gmail.com", role = c("aut", "cre"))
Description: Functions for working with two- and four-parameter Beta
    distributions and the closely related Beta-Binomial distribution, and for
    estimating the accuracy and consistency of test-based classifications.
    Includes d/p/q/r functions for four-parameter Beta distributions,
    including parameterization by mean and variance; d/p/r functions for
    Beta-Binomial distributions and for Lord's two-term approximation to the
    compound Binomial distribution; moments of Beta, Binomial, Beta-Binomial,
    and observed-score distributions; and method-of-moments fitting of two- and
    four-parameter Beta true-score distributions. Classification accuracy and
    consistency can be estimated with the 'Livingston and Lewis' approach
    (Livingston and Lewis, 1995 <doi:10.1111/j.1745-3984.1995.tb00462.x>), the
    'Hanson and Brennan' approach based on Lord's strong true-score theory
    (Lord, 1965 <doi:10.1007/BF02289490>; Hanson, 1991
    <https://files.eric.ed.gov/fulltext/ED344945.pdf>), and the multinomial
    and compound multinomial approach (Lee, 2007
    <doi:10.1177/0146621606294206>; Lee, Brennan, and Wan, 2009
    <doi:10.1177/0146621608321759>), for two or more categories, with ROC
    analysis, model-fit tests, and examinee- or score-level results.
License: CC0
Imports: graphics, stats
Suggests: testthat (>= 3.0.0)
Config/testthat/edition: 3
URL: https://github.com/HaakonEidemHaakstad/betafunctions
BugReports: https://github.com/HaakonEidemHaakstad/betafunctions/issues
Encoding: UTF-8
RoxygenNote: 7.3.3
NeedsCompilation: no
Packaged: 2026-10-18 18:10:27 UTC; hehaa
Author: Haakon Eidem Haakstad [aut, cre]
Maintainer: Haakon Eidem Haakstad <h.e.haakstad@gmail.com>
Repository: CRAN
Date/Publication: 2026-10-19 09:20:02 UTC
