class NegativeBinomial

Attributes

n[RW]
p[RW]

Public Class Methods

new(n, p) click to toggle source
# File lib/probaberry/discrete.rb, line 51
def initialize n, p
  @n = n
  @p = p
end

Public Instance Methods

==(x) click to toggle source
# File lib/probaberry/discrete.rb, line 55
def == x
  ncr.choose(x - 1, n - 1) * p ** n * (1 - p) ** (x - n)
end