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Re: st: Why many things have Normal distribution


From   Austin Nichols <[email protected]>
To   "[email protected]" <[email protected]>
Subject   Re: st: Why many things have Normal distribution
Date   Thu, 29 Aug 2013 16:19:02 -0400

Marcos et al.
On a possible connection from the CLT to physical laws via entropy, see e.g.
http://arxiv.org/abs/0808.1260

On Thu, Aug 29, 2013 at 4:06 PM, David Hoaglin <[email protected]> wrote:
> Vinicius,
>
> I have the opposite point of view.  Among statisticians it's pretty
> well understood that real data are never normal.  Often, not even
> approximately.
>
> In many situations the behavior of a sample mean is close to a normal
> distribution, appealing to the Central Limit Theorem.
>
> David Hoaglin
>
> On Thu, Aug 29, 2013 at 2:27 PM, Marcos Vinicius
> <[email protected]> wrote:
>> hello,
>> Yesterday someone asked me a philosophical  question :Why many things have Normal distribution ( or at least approximately)?
>> My answer: It is a type of symmetry we observe in nature..  maybe a String Theory specialist may have a technical answer.
>> How do you answer that question?
>> CLT maybe ?
>>
>> Regards,
>> Vinicius
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