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Subject: Re: Christian Kongsted's book

Author: Gian-Carlo Pascutto

Date: 01:53:11 08/22/03

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On August 22, 2003 at 04:43:52, Uri Blass wrote:

>Maybe there is a misunderstanding.
>I did not mean to say that it is statistically significant when I said
>evidence.

There's a difference between an indication and evidence.

>The point is that even if the data is not statistically significant it suggests
>something

That is true.

>and I do not think that it is right to ignore the data only because
>of the fact that it is not statistically significant.

I think it is. (I don't use a hard threshold obviously, but I do
need a strong indication it wasn't just luck.)

>I know that there are programmers who do not do it
>see
>http://www.f11.parsimony.net/forum16635/messages/52921.htm
>for comparison that he used to decide that the change is not productive
>see
>http://www.innconx.com/~wildcat/279.html
>http://www.innconx.com/~wildcat/282.html
>
>282 scored one point more than 279 but the programmer decided not to accept the
>change.

If I look at that, I conclude that it's either not making a difference
or the difference is too small to worry about.

>Of course the difference is too small to get significant results but there is a
>basis to give bigger probability to the event that 282 is better and not to the
>event that 279 is better.

It's way to small to make a decision on.

--
GCP



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