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December 21st, 2016, 04:02 PM  #1 
Newbie Joined: Dec 2016 From: UK Posts: 1 Thanks: 0  Probability distribution
Hello, does any one recognise this formula? https://www.wolframalpha.com/input/?...(%5Calpha))*x!) $\displaystyle \frac{e^{\alpha}\alpha ^x}{(1e^{\alpha})x!}$ To what is refers? King regards Last edited by greg1313; December 21st, 2016 at 08:07 PM. 
December 22nd, 2016, 06:22 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,216 Thanks: 493 
It looks like A Poisson density (x integer) under the condition that x=0 is excluded.


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