arithmetic mean

2 definitions found

arithmetic mean - WordNet (r) 2.1 (2005) :

  arithmetic mean
      n 1: the sum of the values of a random variable divided by the
           number of values [syn: arithmetic mean, first moment,
           expectation, expected value]

arithmetic mean - Free On-line Dictionary of Computing (26 May 2007) :

  arithmetic mean
  
     <mathematics> The mean of a list of N numbers calculated by
     dividing their sum by N.  The arithmetic mean is appropriate
     for sets of numbers that are added together or that form an
     arithmetic series.  If all the numbers in the list were
     changed to their arithmetic mean then their total would stay
     the same.
  
     For sets of numbers that are multiplied together, the
     geometric mean is more appropriate.
  
     (2007-03-20)