class RandomVariateGenerator::BinomialVariate

Public Class Methods

new(params = {}) click to toggle source
# File lib/random_variate_generator/binomial_variate.rb, line 4
def initialize(params = {})
   if params[:probability_of_success]
     @probability_of_success = params[:probability_of_success] 
   else
     raise InvalidParameterException.new "Parameter :probability_of_success no specified"
   end
   raise InvalidParameterException.new "Parameter :probability_of_success must be greater than 0" if @probability_of_success <= 0
   if params[:number_of_trials]
     @number_of_trials = params[:number_of_trials] 
   else
     raise InvalidParameterException.new "Parameter :number_of_trials no specified"
   end
   raise InvalidParameterException.new "Parameter :number_of_trials must be greater than 0" if @number_of_trials <= 0
end

Public Instance Methods

generate_value() click to toggle source
# File lib/random_variate_generator/binomial_variate.rb, line 19
def generate_value
  Random.binomial(:probability_of_success => @probability_of_success,
                            :number_of_trials => @number_of_trials)
end