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Fast way to calculate sum of discrete poisson distribution [message #52725]

Sat, 24 February 2007 13:10

bk1
Messages: 7
Registered: February 2007

Junior Member

I have been struggeling with this for a while. Basically I need to
calculate the quadratic sum of the discrete poisson distribution:

k = INDGEN(8)

sum = TOTAL( p^k / FACTORIAL(k) * EXP(-p) * k^2 )

This workes fine for a scalar p. Is there a way to calculate the
quadratic sum for every element of an array p without using a loop?
Thanks for your help!

Bernd

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Fast way to calculate sum of discrete poisson distribution

By: bk1 on Sat, 24 February 2007 13:10

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