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Subject: Re: Percentages

Author: Rolf Tueschen

Date: 02:58:14 06/24/05

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On June 24, 2005 at 05:46:56, Amir wrote:

>On June 24, 2005 at 05:33:17, Rolf Tueschen wrote:
>
>>On June 24, 2005 at 04:13:58, Amir wrote:
>>
>>>of 200 rating points means that the stronger player has an expected score of
>>>approximately 0.75%. The performance rating is calculated using a player who is
>>>rated 2737 **FIDE**, not USCF. And you have high IQ?
>>
>>If there is a connection between IQ and the maths of probabilities then the
>>author of the quote above has a real problem to face with his IQ. As a matter of
>>fact there is no such percentage as 0.75%. You can either say 75% or "0.75" or
>>".75"! So, it's a long way to become a second Einstein... ;)
>
>That was obviously a typo, as you can see in my next post I wrote 75%. You
>always pick on typos?

1. Yes, but only on Fridays.
2. BTW it wasn't a typo because the context is wrong. It's a difference in
systems. One time you work with base 100 and add %, but if you work with base 1
you even leave out the zero before the point.

[Short addition for Americans only: We in Europe write a decimal number this way
0,75 - so there is a clear change if we mean to say a probability THEN we write
.75 which is the same as if we wrote 75% However Amir has written something like
0,75% -of course he used the American system and wrote 0.75%- but again this is
absolutely wrong, because what he wrote does mean 0,75% which is less that 1%!]

[Offtopic and for a huge debate in CTF: is Israel part of the USA or part of
Europe???]

:)



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