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Posted by Fred on 01/31/08 19:40
On 31 jan, 14:29, The Natural Philosopher <a...@b.c> wrote:
> Fred wrote:
> > Hi guys,
>
> > I was wondering how could i get a random number exemple between 1 and
> > 100 but with n% of getting some value over a number x.
>
> > Thanks a lot in advance.
>
> > Fred
>
> Never mind Jerry, No one else does.
>
> So you want a random number from a weighted distribution?
>
> Your spec doesn't contain quite enough data to formulate the formula,
> since there are an infinite number of distributions that have N% over
> value X..
>
> One example, is that you first of all get a random number between 0 and
> 100: If this is greater than N, then select a random number greater than
> X, else select one less than X.
>
> So in pseudo code where RAND(X) returns a number between 0 and X-1...
>
> if ((RAND(100))<N) THEN RETURN RAND(X) ELSE RETURN(X+RAND(100-X));
Thanks for the info, i wont mind on him then =)
Almost there with the code,
Let me add some real number in the exemple :
i know before the random what number i must have over let take 50 for
the exemple,
i also need the random to still pick between 0 and 100, but with a
chance of 60% (exemple) to draw something over 50 .
Thanks
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