Distribution

Parameters

Beta

first shape, second shape

Binomial

number of trials, event probability

Cauchy

location, scale

Chi-Square

degrees of freedom

Discrete

values, probabilities

Exponential

scale, threshold (optional)

F

numerator degrees of freedom, denominator degrees of freedom

Gamma

shape, scale, threshold (optional)

Geometric

event probability

Hypergeometric

population size, event count in population, sample size

Integer

minimum value, maximum value

Laplace

location, scale

Largest extreme value

location, scale

Logistic

location, scale

Loglogistic

location, scale, threshold (optional)

Lognormal

location, scale, threshold (optional)

Negative binomial

event probability,
number of events needed

Normal

mean, standard deviation

Poisson

mean

Smallest extreme value

location, scale

t

degrees of freedom

Triangular

lower endpoint, mode, upper endpoint

Uniform

lower endpoint, upper endpoint

Weibull

shape, scale, threshold (optional)