Class: Prubybility::Bernoulli

Inherits:

Binomial

• Object
• Binomial
• Prubybility::Bernoulli

Defined in:

lib/prubybility/bernoulli.rb

Overview

A representation of the Bernoulli probability distribution.

See README for example usages.

Instance Attribute Summary

Attributes inherited from Binomial

#expected_value, #n, #theta, #variance

Instance Method Summary

• #initialize(theta) ⇒ Bernoulli constructor

  A new instance of Bernoulli.

• #p(var) ⇒ Object

Constructor Details

#initialize(theta) ⇒ Bernoulli

Returns a new instance of Bernoulli.

# File 'lib/prubybility/bernoulli.rb', line 8

def initialize(theta)
  super(1, theta)
end

Instance Method Details

#p(var) ⇒ Object

# File 'lib/prubybility/bernoulli.rb', line 12

def p(var)
  return unless valid_value?(var)

  (theta**var) * (1 - theta)**(1 - var)
end