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Posted to issues@commons.apache.org by "Fawaz Alhenaki (Jira)" <ji...@apache.org> on 2020/02/11 21:28:00 UTC
[jira] [Closed] (MATH-1514) IRR NaN When it should give back a
value
[ https://issues.apache.org/jira/browse/MATH-1514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fawaz Alhenaki closed MATH-1514.
--------------------------------
Resolution: Invalid
Wrong forum.
> IRR NaN When it should give back a value
> ----------------------------------------
>
> Key: MATH-1514
> URL: https://issues.apache.org/jira/browse/MATH-1514
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.6
> Reporter: Fawaz Alhenaki
> Priority: Minor
> Attachments: TestIrr.java
>
>
> I have created a sample of when the issue occurs. IRR in apache documentation says that covers "20 tries" as shown here [https://poi.apache.org/apidocs/dev/org/apache/poi/ss/formula/functions/Irr.html]
> which is identical to Microsoft Excel [https://support.office.com/en-us/article/irr-function-64925eaa-9988-495b-b290-3ad0c163c1bc]
> This indicate that the result is the same between the two; however, in the case of apache poi, it seems that the result is returned as NaN (while excel returns the actual result).
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