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