Method: Statsample::StratifiedSample.mean

Defined in:
lib/statsample/multiset.rb

.mean(*vectors) ⇒ Object

mean for an array of vectors



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# File 'lib/statsample/multiset.rb', line 98

def mean(*vectors)
  n_total=0
  means=vectors.inject(0){|a,v|
    n_total+=v.size
    a+v.sum
  }
  means.to_f/n_total
end