Gamma distribution

GPTKB entity

Statements (51)
Predicate Object
gptkbp:instanceOf Probability distribution
gptkbp:application Bayesian statistics
Meteorology
Hydrology
Queuing models
Reliability engineering
gptkbp:category Continuous probability distribution
gptkbp:characteristic (1-iθt)^{-k}
gptkbp:conjugatePriorFor gptkb:Poisson_distribution
gptkb:Exponential_distribution
Normal distribution (precision parameter)
gptkbp:cumulativeDistributionFunction F(x;k,θ) = γ(k, x/θ) / Γ(k)
gptkbp:entropy k + ln(θΓ(k)) + (1-k)ψ(k)
gptkbp:firstDescribed gptkb:E._L._D._Gamma
gptkbp:generalizes gptkb:Exponential_distribution
gptkb:Chi-squared_distribution
gptkbp:hasSpecialCase gptkb:Pearson_Type_III_distribution
https://www.w3.org/2000/01/rdf-schema#label Gamma distribution
gptkbp:kurtosis 6/k
gptkbp:limitation Normal distribution (for large k)
gptkbp:meaning
gptkbp:mode (k-1)θ, for k > 1
gptkbp:momentGeneratingFunction (1-θt)^{-k}, for t < 1/θ
gptkbp:namedAfter gptkb:Gamma_function
gptkbp:parameter Rate parameter (θ or β)
Scale parameter (θ)
Shape parameter (k or α)
Shape-rate
Shape-scale
gptkbp:pdf f(x;k,θ) = x^{k-1} e^{-x/θ} / (θ^k Γ(k)), x > 0
gptkbp:relatedTo gptkb:Weibull_distribution
gptkb:Erlang_distribution
gptkb:Generalized_gamma_distribution
gptkb:Inverse_gamma_distribution
gptkb:Log-gamma_distribution
gptkb:Nakagami_distribution
gptkb:Poisson_distribution
gptkb:Beta_distribution
gptkbp:skewness 2/√k
gptkbp:sumOf Independent exponential random variables
gptkbp:supports x > 0
Real numbers greater than zero
gptkbp:usedFor Modeling insurance claims
Modeling lifetimes of objects
Modeling rainfall amounts
Modeling waiting times
gptkbp:usedIn gptkb:Probability_theory
Statistics
gptkbp:variant kθ^2
gptkbp:bfsParent gptkb:Pearson_distribution
gptkbp:bfsLayer 5