How can i prove that the expected value of a poisson distribution is lambda?
Please help.
From the definition: (the missing steps are left for you to fill in) and you should recognise what the sum is equal to ....
Another way is to use the result found here: http://www.mathhelpforum.com/math-he...tribution.html
Thread of related interest: http://www.mathhelpforum.com/math-he...sson-dist.html.