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I searched the Stata listeserver archive and I have not seen any reported
problem for -- genpoisson --.
If X = Poisson distribution with parameter lambda,
mean(X) = lambda
--genpoisson-- seems to work for lambda < 80.
--genpoisson-- seems to have problems for lambda > 80 ?
Is this a known problem ?
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package installation
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package name: gendist.pkg
from: http://www.stata.com/users/rgutierrez/
checking gendist consistency and verifying not already installed...
all files already exist and are up-to-date.
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EXAMPLE
. set obs 1000
obs was 0, now 1000
. genpoisson x25, mu(25)
. genpoisson x50, mu(50)
. genpoisson x75, mu(75)
. genpoisson x80, mu(80)
. genpoisson x90, mu(90)
. genpoisson x100, mu(100)
. genpoisson x200, mu(200)
. tabstat x*, s(n min max mean sd) c(stat) f(%9.2f)
variable | N min max mean sd
-------------+--------------------------------------------------
x25 | 1000.00 10.00 43.00 25.08 5.16
x50 | 1000.00 30.00 69.00 50.29 6.97
x75 | 1000.00 47.00 108.00 74.88 8.65
x80 | 1000.00 56.00 107.00 79.97 8.72
x90 | 1000.00 56.00 115.00 82.88 9.15
x100 | 1000.00 60.00 112.00 83.24 8.86
x200 | 1000.00 58.00 119.00 83.12 9.19
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Thank you.
Benoit Dulong
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