Class: ABVariant

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
lib/a_b/model/a_b_variant.rb

Instance Method Summary collapse

Instance Method Details

#confidence ⇒ Object 



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# File 'lib/a_b/model/a_b_variant.rb', line 10

def confidence
  if compute_confidence?
    cumulative_normal_distribution(z_score(self.test.control))
  else
    'n/a'
  end
end

#confidence_ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/a_b/model/a_b_variant.rb', line 18

def confidence_ok?
  cumulative_normal_distribution(z_score(self.test.control)) >= 0.95
end

#conversion_rate ⇒ Object 



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# File 'lib/a_b/model/a_b_variant.rb', line 22

def conversion_rate
  if conversions > 0
    1.0 * conversions / visitors
  else
    0.0
  end
end

#conversion_rate_ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/a_b/model/a_b_variant.rb', line 30

def conversion_rate_ok?
  conversion_rate > self.test.control.conversion_rate
end

#pretty_confidence ⇒ Object 



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# File 'lib/a_b/model/a_b_variant.rb', line 34

def pretty_confidence
  pretty confidence
end

#pretty_conversion_rate ⇒ Object 



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# File 'lib/a_b/model/a_b_variant.rb', line 38

def pretty_conversion_rate
  pretty conversion_rate
end

#suggested_visitors ⇒ Object 



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# File 'lib/a_b/model/a_b_variant.rb', line 42

def suggested_visitors
  size = sample_size(self.test.control)
  if conversion_rate == 0 || size < 100
    100
  else
    commafy size
  end
end

#suggested_visitors_ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/a_b/model/a_b_variant.rb', line 51

def suggested_visitors_ok?
  visitors > sample_size(self.test.control)
end

#suggested_visitors_with_commas ⇒ Object 



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# File 'lib/a_b/model/a_b_variant.rb', line 55

def suggested_visitors_with_commas
  commafy suggested_visitors
end

#visitors_with_commas ⇒ Object 



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# File 'lib/a_b/model/a_b_variant.rb', line 59

def visitors_with_commas
  commafy visitors
end