Generalized Gamma Distribution with Threshold

Generalized Gamma Distribution with Threshold

Probability Density Function (PDF)

Cumulative Distribution Function (CDF)

where 𝛤(𝛽) is the Gamma function and 𝛾(𝑘, 𝑧) is the lower incomplete Gamma function.

Range 0 ≤ 𝑥 - 𝜃 < ∞

Scale Parameter 𝛼 > 0

Shape1 parameter 𝑘 > 0

Shape1 parameter 𝑝 > 0

Threshold parameter 𝜃 < 𝑚𝑖𝑛(𝑥)