Method: Faker::Number.normal

Defined in:
lib/faker/default/number.rb

.normal(mean: 1, standard_deviation: 1) ⇒ Float

Produces a float given a mean and standard deviation.

Examples:

Faker::Number.normal(mean: 50, standard_deviation: 3.5) #=> 47.14669604069156

Parameters:

  • mean (Integer) (defaults to: 1)
  • standard_deviation (Numeric) (defaults to: 1)

Returns:

  • (Float)

Available since:

  • 1.0.0



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# File 'lib/faker/default/number.rb', line 147

def normal(mean: 1, standard_deviation: 1)
  theta = 2 * Math::PI * rand
  rho = Math.sqrt(-2 * Math.log(1 - rand))
  scale = standard_deviation * rho
  mean + scale * Math.cos(theta)
end