Wolfram Language & System 10.0 (2014)|Legacy Documentation

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gives the statistical mean of the elements in list.

gives the mean of the symbolic distribution dist.


  • Mean is also known as an expectation or average.
  • Mean is a location measure for data or distributions.
  • Mean[list] is equivalent to Total[list]/Length[list].
  • Mean handles both numerical and symbolic data.
  • Mean[{{x1,y1,},{x2,y2,},}] gives .
  • Mean[dist] is equivalent to Expectation[x,xdist].
Introduced in 2003
| Updated in 2007