Exponential-Related Distributions
Exponential and related distributions occur in a variety of contexts, such as reliability and communication. As such, a large number of extensions and variations of exponential distributions are frequently used.
Exponential and Related Distributions
ExponentialDistribution — exponentially decreasing PDF
LaplaceDistribution ▪ LindleyDistribution ▪ LogisticDistribution ▪ RayleighDistribution ▪ SechDistribution ▪ ExponentialPowerDistribution ▪ ShiftedGompertzDistribution
Phase-Type Distributions
ErlangDistribution — sum of 
identical exponential distributions (phases)
HypoexponentialDistribution — sum of 
different exponential distributions (phases)
HyperexponentialDistribution ▪ CoxianDistribution
Gamma and Related Distributions
GammaDistribution — generalized sum of 
exponential distributions
InverseGammaDistribution ▪ LogGammaDistribution ▪ ExpGammaDistribution ▪ NakagamiDistribution ▪ ChiDistribution ▪ MaxwellDistribution ▪ MoyalDistribution ▪ VarianceGammaDistribution ▪ MeixnerDistribution ▪ TsallisQExponentialDistribution