Method: Eps::Statistics.normal_cdf

Defined in:
lib/eps/statistics.rb

.normal_cdf(x, mean, std_dev) ⇒ Object 



3
4
5
 
# File 'lib/eps/statistics.rb', line 3

def self.normal_cdf(x, mean, std_dev)
  0.5 * (1.0 + Math.erf((x - mean) / (std_dev * Math.sqrt(2))))
end