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Eunoia/high_outliers

Created November 20, 2015 01:13
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Uses DescriptiveStatistics to find outliers
Raw
high_outliers
def self.high_outliers(column)
values = pluck(column)
q1 = DescriptiveStatistics::Stats.new(select{|d| d.send(column)<values.median }.map{ |d| d.send(column)}).median
q3 = DescriptiveStatistics::Stats.new(select{|d| d.send(column)>values.median }.map{ |d| d.send(column)}).median
iqr = q3-q1
select { |d| d.send(column)>(q3 + 1.5 * iqr) }
end
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