Class: Statistic::StandardDeviation

Inherits:

Base

• Object
• Base
• Statistic::StandardDeviation

Defined in:

lib/statistic.rb

Overview

正規表現

Instance Attribute Summary

Attributes inherited from Base

#nums

Instance Method Summary

• #calc ⇒ Object

  正規分布.

• #within_95_percent?(data) ⇒ Boolean

  95%信頼区間: 正規分布の2倍の範囲内に入るかどうか.

Methods inherited from Base

#average, #deviations, #initialize, #variances

Constructor Details

This class inherits a constructor from Statistic::Base

Instance Method Details

#calc ⇒ Object

正規分布

# File 'lib/statistic.rb', line 38

def calc
  variances ** (1 / 2.0)
end

#within_95_percent?(data) ⇒ Boolean

95%信頼区間: 正規分布の2倍の範囲内に入るかどうか

Returns:

• (Boolean)

# File 'lib/statistic.rb', line 43

def within_95_percent?(data)
  within_n_deviation?(2, data)
end