Benfords Law and tax dept
01-21-2015, 08:24 AM
Post: #1
 vk6ti Member Posts: 102 Joined: Sep 2014
Benfords Law and tax dept
Hi Folks,
Many of you would know about Benfords Law, but I thought I may throw this one out there as an anecdote for the passing forum reader, in case they haven't

Frank Benford discovered that out of all random numbers 0 to 9, that one number shows up more frequently than others, and that is the number 1. Other numbers follow suit and do form some sort of plot or curve. ( he noticed this when compiling random numbers from Log tables that the sections starting with 1, was more populated than others, as they were the most used and dirty)
and came up with the necessary mathematics to prove it, hence Benfords law.
now
they break all your figures into single integers from 0 to 9 and tally them up with something called a computer, and compare the results to the typical curve,
in other words, if the number 1 is not the most frequent number, then is flags the system and it's an AUDIT prompt. Most violators who have "fiddled" the books, have been caught out by this method.

I may have thought all numbers were equal but some numbers may be more equal than others :-) ( not my line )

Have a nice day
Ray
01-24-2015, 01:09 PM
Post: #2
 Thomas Klemm Senior Member Posts: 1,447 Joined: Dec 2013
RE: Benfords Law and tax dept
This is a visual proof of Benford's Law:

Cheers
Thomas
01-24-2015, 04:22 PM
Post: #3
 Massimo Gnerucci Senior Member Posts: 2,315 Joined: Dec 2013
RE: Benfords Law and tax dept
Nice proof! :)

Greetings,
Massimo

-+×÷ ↔ left is right and right is wrong
01-25-2015, 01:39 AM
Post: #4
 Joe Horn Senior Member Posts: 1,763 Joined: Dec 2013
RE: Benfords Law and tax dept
(01-24-2015 01:09 PM)Thomas Klemm Wrote:  This is a visual proof of Benford's Law...

Excellent example!

The following is not as dramatic, but FWIW it's on an HP 49G calculator:

<0|ɸ|0>
-Joe-
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