class StatisticalMethods::Computer
Calculation class
Public Class Methods
new()
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# File lib/statistical_methods/computer.rb, line 4 def initialize @average = StatisticalMethods::SummaryStatistic::Location::Average @median = StatisticalMethods::SummaryStatistic::Location::Median @mode = StatisticalMethods::SummaryStatistic::Location::Mode end
Public Instance Methods
geometric_mean(array)
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# File lib/statistical_methods/computer.rb, line 46 def geometric_mean(array) @average.new(array).geometric_mean end
harmonic_mean(array)
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# File lib/statistical_methods/computer.rb, line 42 def harmonic_mean(array) @average.new(array).harmonic_mean end
leader(array)
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# File lib/statistical_methods/computer.rb, line 63 def leader(array) Leader.new(array).find end
max(array)
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# File lib/statistical_methods/computer.rb, line 22 def max(array) array.max end
mean(array)
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# File lib/statistical_methods/computer.rb, line 14 def mean(array) @average.new(array).arithmetic_mean end
median(array)
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# File lib/statistical_methods/computer.rb, line 38 def median(array) @median.new(array).find end
min(array)
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# File lib/statistical_methods/computer.rb, line 18 def min(array) array.min end
mode(array)
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en.wikipedia.org/wiki/Mode_(statistics)
# File lib/statistical_methods/computer.rb, line 51 def mode(array) @mode.new(array).find end
power_mean(array, exponent)
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# File lib/statistical_methods/computer.rb, line 59 def power_mean(array, exponent) @average.new(array).power_mean(exponent) end
quadratic_mean(array)
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# File lib/statistical_methods/computer.rb, line 55 def quadratic_mean(array) @average.new(array).quadratic_mean end
standard_deviation(array)
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en.wikipedia.org/wiki/Standard_deviation
# File lib/statistical_methods/computer.rb, line 33 def standard_deviation(array) Math.sqrt(variance array) end
sum(array)
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# File lib/statistical_methods/computer.rb, line 10 def sum(array) array.addition end
variance(array)
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en.wikipedia.org/wiki/Variance
# File lib/statistical_methods/computer.rb, line 27 def variance(array) arithmetic_mean = mean(array) mean(array.map { |value| (arithmetic_mean - value)**2 }) end