Class: Benchmark::Experiment::DescriptiveStatistics

Inherits:
Object
  • Object
show all
Defined in:
lib/benchmark/lab/descriptive_statistics.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sample, name = '') ⇒ DescriptiveStatistics

Returns a new instance of DescriptiveStatistics.



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 4

def initialize(sample, name = '')
  # raise exception if empty sample
  @name = name
  @sample = sample.sort
  @minimum, @maximum = @sample.minmax
  @median = calculate_median_of(@sample)
  @first_quartile = calculate_first_quartile_of(@sample)
  @third_quartile = calculate_third_quartile_of(@sample)
end

Instance Attribute Details

#first_quartile ⇒ Object (readonly)

Returns the value of attribute first_quartile.



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 14

def first_quartile
  @first_quartile
end

#maximum ⇒ Object (readonly)

Returns the value of attribute maximum.



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 14

def maximum
  @maximum
end

#median ⇒ Object (readonly)

Returns the value of attribute median.



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 14

def median
  @median
end

#minimum ⇒ Object (readonly)

Returns the value of attribute minimum.



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 14

def minimum
  @minimum
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 14

def name
  @name
end

#sample ⇒ Object (readonly)

Returns the value of attribute sample.



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 14

def sample
  @sample
end

#third_quartile ⇒ Object (readonly)

Returns the value of attribute third_quartile.



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 14

def third_quartile
  @third_quartile
end

Instance Method Details

#interquartile_range ⇒ Object 



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 20

def interquartile_range
  @third_quartile - @first_quartile
end

#sample_size ⇒ Object 



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 16

def sample_size
  sample.size
end

#to_json(options = {}) ⇒ Object 



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# File 'lib/benchmark/lab/descriptive_statistics.rb', line 24

def to_json(options = {})
  {
    'name' => name,
    'sample' => sample,
    'sample_size' => sample_size,
    'minimum' => minimum,
    'maximum' => maximum,
    'first_quartile' => first_quartile,
    'third_quartile' => third_quartile,
    'median' => median,
    'interquartile_range' => interquartile_range
  }.to_json
end