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Subject: [OASIS Issue Tracker] Updated: (OFFICE-2387) 5.18.56 PEARSON

     [ http://tools.oasis-open.org/issues/browse/OFFICE-2387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dennis Hamilton updated OFFICE-2387:

    Fix Version/s: ODF 1.2 Part 2 CD 1
                       (was: ODF 1.2 Part 2 CD 2)

> 5.18.56 PEARSON
> ---------------
>                 Key: OFFICE-2387
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2387
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Bug
>          Components: OpenFormula
>            Reporter: Patrick Durusau
>            Assignee: Andreas Guelzow 
>             Fix For: ODF 1.2 Part 2 CD 1
> Text under Semantics reads:
> "Implementations should be wary of actually calculating PEARSON this way, due to numerical instability issues."
> "...be wary..."? Perhaps a note, if it says what those "issues" may be. 
> BTW, in researching this function I found: http://www.statemaster.com/encyclopedia/Correlational-research
> It may just be a presentation issue but does the square root on the denominator extend across both of the summation signs?
> Oh, the resource I cite above alleges a better way to calculate this function with numeric stability. 

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