Class: Serie

Inherits:
Object
  • Object
show all
Defined in:
lib/serie.rb

Overview

object Serie to be used in Correlation class

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ Serie

Returns a new instance of Serie.



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# File 'lib/serie.rb', line 9

def initialize(data)
  @data = data if Check.valid?(data)
  @size = data.size
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/serie.rb', line 7

def data
  @data
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/serie.rb', line 7

def size
  @size
end

Instance Method Details

#average ⇒ Object

moy_x



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# File 'lib/serie.rb', line 15

def average
  @data.reduce(:+) / @data.size.to_f
end

#squared_variances ⇒ Object

array of (xi - moy_x)^2 i periods i periods



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# File 'lib/serie.rb', line 29

def squared_variances
  squared_variances = []
  @data.each { |number| squared_variances << (number - average)**2 }
  squared_variances
end

#variances ⇒ Object

array of xi - moy_x i periods



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# File 'lib/serie.rb', line 21

def variances
  variances = []
  @data.each { |number| variances << number - average }
  variances
end