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Gilles commented on MATH-1120:
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bq. I have added AtomicInteger (not b'cos of Threads)but as a mutable holder for Int (akin to INOUT parameter). [...]
But what is the purpose of this argument?
I also don't get the purpose of the "preProcess" method.
> Need Percentile computations that can be matched with standard spreadsheet formula
> ----------------------------------------------------------------------------------
>
> Key: MATH-1120
> URL: https://issues.apache.org/jira/browse/MATH-1120
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 3.2
> Reporter: Venkatesha Murthy TS
> Labels: Percentile
> Fix For: 4.0
>
> Attachments: excel-percentile-patch, percentile-with-estimation-patch, r-output.txt
>
> Original Estimate: 504h
> Remaining Estimate: 504h
>
> The current Percentile implementation assumes and hard-codes the quantile pth position as
> p * (N+1)/100 and provides a kth selected value.
> However if we need to verify compare/contrast with standard statistical tools such as say MS Excel; it would be good to provide an extensible way of morphing this selection of position than hard code.
> For example in order to generate the percentile closely matching with MS Excel the position required may be [p*(N-1)/100]+1.
> Please let me know if i could submit this as a patch.
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