Dear Dr Thomas/You may have a look to Abramowitz and Stegun (the
numerical bible) on pages 944 and 945 in which they address the
calculation of the incomplete beta function involved in the CDF of the
NB.
Best Wishes
JLF
Andrew Thomas <[log in to unmask]> a écrit :
>
> Hello BUGS users,
>
> does anyone know how to calculate the cumulative distribution
> function for the the negative binomial and zipf?
>
> Thanks
>
> Andrew
>
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