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Distributions for failure times

  1. Exponential distribution
  2. ParametersProbability density function  f(t)Hazard function h(t)Cumulative survival function S(t)
    λλexp(-λt)λexp(-λt)

     

  3. Weibull distribution
  4. ParametersProbability density function  f(t)Hazard function h(t)Cumulative survival function S(t)
    λ, γ λ γtγ -1exp(-λt γ) λγtγ-1 exp(-λ tγ)