[Numpy-tickets] [NumPy] #502: Unbiased estimates of variance/ std deviation

NumPy numpy-tickets@scipy....
Wed Feb 20 04:19:49 CST 2008


#502: Unbiased estimates of variance/ std deviation
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 Reporter:  pierregm     |        Owner:  somebody
     Type:  enhancement  |       Status:  new     
 Priority:  low          |    Milestone:  1.1     
Component:  Other        |      Version:  none    
 Severity:  trivial      |   Resolution:          
 Keywords:               |  
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Comment (by mdehoon):

 charris wrote:
 > something like bias={0,1}.

 rkern wrote:
 > My preference is to not use the term "bias," since it's wrong.

 One solution is to use ml={1,0}, with ml standing for maximum likelihood.
 Dividing by N gives the maximum likelihood estimate, and this is true both
 for the variance and the standard deviation.

-- 
Ticket URL: <http://www.scipy.org/scipy/numpy/ticket/502#comment:5>
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