From: Cameron McBride <cameron.mcbride@...>
Date: 2009-11-04T11:28:00+09:00
Subject: [ruby-core:26517] Re: Add Standard Deviation Function to Math 	Module

On Tue, Nov 3, 2009 at 16:56, Yusuke ENDOH <mame@tsg.ne.jp> wrote:
> Hi,
>
> 2009/11/3 Yukihiro Matsumoto <matz@ruby-lang.org>:
>> |I was thinking that a Statistics module would be a good addition to Ruby. If
>> |you decide that it would be worth creating one, I would be happy to
>> |contribute.
>>
>> Although I have no knowledge and experience about statistics, I would
>> love to support technically. �[ruby-core:26491] would be a good
>> starting point.
>
>
> I also think that statistics module will be really useful and important.
> But it is arguable for me about how to embed:
>
> - Should it be a core-embedded library, not standard library nor gem?
> - Should it be written in C, not Ruby?
> - Should it be written from the scratch? �Why don't we import existing
> �well-tested library? �For example, NArray provides standard deviation.

I still don't understand why NArray isn't in the stdlib.  It'd be
great to "bless" a simple and elegant library like this to build off
of (for specific C extensions, etc).

Cameron