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From "Gilles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-1280) DescriptiveStatistics methods return NaN for operations on arrays with single items
Date Wed, 07 Oct 2015 15:27:26 GMT

    [ https://issues.apache.org/jira/browse/MATH-1280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14947026#comment-14947026
] 

Gilles commented on MATH-1280:
------------------------------

I cannot reproduce this behaviour on the development code (for upcoming versions 3.6 and 4.0).

Please let us know whether the bug exists on version 3.5 (current supported version):
  http://commons.apache.org/proper/commons-math/download_math.cgi


> DescriptiveStatistics methods return NaN for operations on arrays with single items
> -----------------------------------------------------------------------------------
>
>                 Key: MATH-1280
>                 URL: https://issues.apache.org/jira/browse/MATH-1280
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.4
>            Reporter: Marlon Gaspar Machado
>
> 1. Create a DescriptiveStatistics object passing an array with only one value
> 2. Call getMean() method
> 3. Call getStandardDeviation() method
> 4. Both return NaN



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