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Subject: [OASIS Issue Tracker] Updated: (OFFICE-2298) TTEST

     [ http://tools.oasis-open.org/issues/browse/OFFICE-2298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eike Rathke updated OFFICE-2298:

    Affects Version/s:     (was: ODF 1.2)

> ------
>                 Key: OFFICE-2298
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2298
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Sub-task
>          Components: OpenFormula
>            Reporter: Robert Weir 
>            Assignee: Andreas Guelzow 
> == 6.17.80 TTEST ==
> A lot of problems :(
> (1) All formulas miss the degrees of freedom. It is necessary for TDIST. 
> In case unequal variance there must be defined, whether the degrees of 
> freedom are made integer by FLOOR or whether they remain real.
> (2) In case paired: sqrt {n-1} is wrong because it is already contained 
> in s_{X_1 - X_2}.
> (3) In case equal variance: definition of s² is missing.
> (4) In case unequal variance: definition does not meet usual 
> definitions. In fact it is the definition for the equal variance case, 
> with pooled variance.
> (5) As TDIST actually returns the values of the cumulative distribution 
> function, the definite integral in the formulas has to be revised 
> together with TDIST.

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