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From "Phil Steitz (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MATH-693) StatUtils, DescriptiveStatistics and SummaryStatistics should expose population variance
Date Sat, 26 Nov 2011 21:25:39 GMT

     [ https://issues.apache.org/jira/browse/MATH-693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Phil Steitz resolved MATH-693.
------------------------------

    Resolution: Fixed
    
> StatUtils, DescriptiveStatistics and SummaryStatistics should expose population variance
> ----------------------------------------------------------------------------------------
>
>                 Key: MATH-693
>                 URL: https://issues.apache.org/jira/browse/MATH-693
>             Project: Commons Math
>          Issue Type: Improvement
>    Affects Versions: 1.0, 1.1, 1.2, 2.0, 2.1, 2.2
>            Reporter: Phil Steitz
>             Fix For: 3.0
>
>
> Javadoc should be clearer that what is returned in the bias-corrected variance (rather
than just linking to the Variance javadoc).  StatUtils should add variance methods that take
a boolean bias correction parameter and DescriptiveStatistics and SummaryStatistics should
either expose a setter or similarly add methods with boolean arguments.  We need to remember
to fix the synchronized versions as well.  Patches welcome!

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