Module: RandomVariable::Samples

Defined in:
lib/samples.rb

Overview

# File: samples.rb #

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Author: Jorge F.M. Rinaldi # Contact: [email protected] #

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Date: 2012/12/02 #

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Instance Method Summary collapse

Instance Method Details

#iterate_samples ⇒ Object 



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# File 'lib/samples.rb', line 17

def iterate_samples
	self.each_with_index do |sample, i|
		if block_given? then
			yield(sample, i)
		end	
	end
end

#max ⇒ Object 



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# File 'lib/samples.rb', line 25

def max
	cur_max = self[0]
	self.iterate_samples do |sample|
		cur_max = sample if sample > cur_max
	end
	cur_max
end

#mean ⇒ Object 



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# File 'lib/samples.rb', line 41

def mean
	return nil if 0 == self.size
	acc = 0.0
	self.iterate_samples do |sample|
		acc += sample
	end
	acc / self.size
end

#median ⇒ Object 



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# File 'lib/samples.rb', line 50

def median
	return nil if 0 == self.size
	return self[0] if 1 == self.size
	ary = self.sort
	i = ary.len / 2
	if ary.len.even? then
		return (ary[i] + ary[i-1]) / 2.0
	else
		return ary[i]
	end
end

#min ⇒ Object 



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# File 'lib/samples.rb', line 33

def min
	cur_min = self[0]
	self.iterate_samples do |sample|
		cur_min = sample if sample < cur_min
	end
	cur_min
end