[racket] a small programming exercise
Stupid me, for I did already read about Benford's law.
Thanks. Jos
> -----Original Message-----
> From: users-bounces at racket-lang.org
> [mailto:users-bounces at racket-lang.org] On Behalf Of Chris Stephenson
> Sent: 15 October 2010 11:13
> To: users at racket-lang.org
> Subject: Re: [racket] a small programming exercise
>
> On 15/10/10 11:33, Jos Koot wrote:
> > When taking a long list of pseudo random positive integers most of
> > which are far greater than the base, I expect about the
> same frequency
> > for each first digit from 1 to base-1. This seems to hold
> if the base
> > is a power of 10, but for other bases, e.g. base 24, I get rather
> > unexpected results. See program below. Someone has an idea
> how this can happen?
>
>
> That is exactly the effect that Shriram was looking for.
>
> Think about the decimal numbers in the range 1-200. How many
> start with
> 1?- More than half. The range 1-1000 is an exception. But
> natural distributions are not uniform over a fixed range.
> They are bell curves of one sort or another. If you have a
> natural random distribution there will always be a skew
> toward the smaller digits. It is quantified as Benford's law.
>
> --
> Chris Stephenson
> cs at cs.bilgi.edu.tr
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