Beta-Weibull distribution: Some properties and applications to censored data

Carl Lee, Felix Famoye, Olugbenga Olumolade

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201 Scopus citations


Some properties of a four-parameter beta-Weibull distribution are discussed. The beta-Weibull distribution is shown to have bathtub, unimodal, increasing, and decreasing hazard functions. The distribution is applied to censored data sets on bus-motor failures and a censored data set on head-and-neck-cancer clinical trial. A simulation is conducted to compare the beta-Weibull distribution with the exponentiated Weibull distribution.

Original languageEnglish
Pages (from-to)173-186
Number of pages14
JournalJournal of Modern Applied Statistical Methods
Issue number1
StatePublished - May 2007


  • Bathtub
  • Bootstrap
  • Censored data
  • Unimodal


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