class StatisticalMethods::SummaryStatistic::Location::Median
Public Class Methods
new(array)
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# File lib/statistical_methods/summary_statistic/location/median.rb, line 5 def initialize(array) @array = array @sorted = @array.sort @number = @array.size end
Public Instance Methods
find()
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# File lib/statistical_methods/summary_statistic/location/median.rb, line 11 def find return if @array.empty? upper = @number / 2 lower = @number.odd? ? upper : upper - 1 (@sorted[lower] + @sorted[upper]) / 2.0 end