package prbnmcn-stats

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Probability density functions.

val poisson : lambda:float -> k:int -> float

val poisson_ln : lambda:float -> k:int -> float

val pi : float

val gaussian : mean:float -> std:float -> float -> float

val gaussian_ln : mean:float -> std:float -> float -> float

val exponential : rate:float -> float -> float

val exponential_ln : rate:float -> float -> float

val geometric : p:float -> int -> float

val geometric_ln : p:float -> int -> float

val uniform : Stats_intf.range -> float -> float

val uniform_ln : Stats_intf.range -> float -> float

val binomial_ln : p:float -> n:int -> k:int -> float

binomial_ln ~p ~n ~k gives the log-probability of having k successes in n independent Bernouilli trials with probability p.

raises Invalid_argument
if p is not in the [0;1] interval, if n < 0, if k < 0 or if k > n.

val binomial : p:float -> n:int -> k:int -> float

binomial_ln ~p ~n ~k gives the probability of having k successes in n independent Bernouilli trials with probability p.

raises Invalid_argument
if p is not in the [0;1] interval, if n < 0, if k < 0 or if k > n.

val gamma_ln : shape:int -> scale:float -> float -> float

gamma_ln ~shape ~scale x is the logarithm of the density function of the gamma distribution.