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# CITATION.cff file created with {cffr} R package
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cff-version: 1.2.0
message: 'To cite package "KOTORY" in publications use:'
type: software
license: GPL-3.0-only
title: 'KOTORY: Robust Three-Group Tests for Heteroscedasticity in Linear Regression'
version: 0.1.0
doi: 10.32614/CRAN.package.KOTORY
abstract: Tests for heteroscedasticity in the linear regression model that sort the
  data by a regressor, split them into three equal parts and compare the error scale
  of the parts. The ordinary least squares version 'kah3.test()' refers the ratio
  of the largest to the smallest residual mean square to its exact null distribution,
  Hartley's maximum F-ratio with three groups; the robust version 'kah.robust.test()'
  replaces the mean squares by least trimmed squares scales, so that outliers neither
  create nor hide heteroscedasticity, and refers the ratio to a maximum F-ratio with
  simulated effective degrees of freedom, to a Monte Carlo reference or to a residual
  bootstrap. The distribution, density, quantile and random generation functions of
  the maximum F-ratio are provided, together with 'run.all.het()', which runs the
  proposed tests next to the Goldfeld-Quandt, Breusch-Pagan, White and robust modified
  Goldfeld-Quandt tests in one call. For more details see Hartley (1950) <https://doi.org/10.1093/biomet/37.3-4.308>,
  Goldfeld and Quandt (1965) <https://doi.org/10.1080/01621459.1965.10480811> and
  Rousseeuw (1984) <https://doi.org/10.1080/01621459.1984.10477105>.
authors:
- family-names: El-Kotory
  given-names: Ahmed
  email: ahmed.elkatory@alexu.edu.eg
  orcid: https://orcid.org/0009-0000-1485-0768
- family-names: Ebrahim
  given-names: Ebrahim Khaled
  email: ebrahimkhaled@alexu.edu.eg
  orcid: https://orcid.org/0009-0006-7839-8778
repository: https://ebrahimkhaled.r-universe.dev
repository-code: https://github.com/ebrahimkhaled/KOTORY
commit: b84aa6c9ca325d813490c4c4bf20310abbf7f76f
url: https://github.com/ebrahimkhaled/KOTORY
date-released: '2026-09-28'
contact:
- family-names: Ebrahim
  given-names: Ebrahim Khaled
  email: ebrahimkhaled@alexu.edu.eg
  orcid: https://orcid.org/0009-0006-7839-8778