On Thu, 6 Nov 2008, Hoang Trong Minh Tuan wrote:
Hi all,
So far I only know one way to get the confidence limit for the Poisson
distribution is to use the look-up table given by the 2 parameter (the
number of observation x and the confidence level, e.g. 95%) and the table is
limit by the maximum number of observations (x <= 50).
I know the formula to compute the CI, however, mathematically it is not
easy to do it. So, anyone know an R function to do this. Thanks
A 'marriage-of-convenience' between uniroot() and ppois() should do it.
HTH,
Chuck
Tuan.
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Charles C. Berry (858) 534-2098
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