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From "Phil Steitz (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-694) Remove XxMoment statistics from the public API
Date Sun, 27 Nov 2011 04:06:40 GMT

    [ https://issues.apache.org/jira/browse/MATH-694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13157650#comment-13157650
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Phil Steitz commented on MATH-694:
----------------------------------

I did not reduce visibility of SecondMoment, because that statistic is used in several places
outside its package. If anyone feels strongly that it should be renamed, please reopen and
we can do that.  The new name I considered was "TotalSumOfSquares,"  That is a little misleading
though, because it sits in the hierarchy between the now hidden First and Third moments and
carries an embedded FirstMoment.
                
> Remove XxMoment statistics from the public API
> ----------------------------------------------
>
>                 Key: MATH-694
>                 URL: https://issues.apache.org/jira/browse/MATH-694
>             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
>
>
> The Second, Third and FourthMoment statistics in o.a.c.m.stat.descriptive.moment are
non-standard and are really just there to make updating more efficient in other statistics
that embed them and the aggregates.  The naming is misleading and I am not sure there is much
independent value to these statistics, so I propose that we change them to have package scope
in 3.0.  I am happy to close this as WONT_FIX if anyone has objections.

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