#9028: Basic Stats - Standard Deviation
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   Reporter:  amhou       |       Owner:  amhou
       Type:  defect      |      Status:  new  
   Priority:  minor       |   Milestone:       
  Component:  statistics  |    Keywords:       
     Author:  Andrew Hou  |    Upstream:  N/A  
   Reviewer:              |      Merged:       
Work_issues:              |  
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 Fixes the calculation of standard deviation.

 Previously, sample standard deviation had returned a denominator of n,
 this fix gives a denominator of n-1.

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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9028>
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