Method: Analytic::Stat#delta

Defined in:
app/models/analytic/stat.rb

#delta ⇒ Float?

e.g. prior = 4 / current = 5 / delta = + 0.25 e.g. prior = 4 / current = 3 / delta = - 0.25

Returns:

  • (Float, nil) 


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# File 'app/models/analytic/stat.rb', line 23

def delta
  return if @prior.nil?
  return if @prior.zero?

  (@current - @prior).fdiv(@prior)
end