Hello,
I am stuck trying to calculate the second moment of the geometric distribution.
E(x^2) = Sum (x^2 * f(x))
= Sum (x^2 * p * q^(x-1))
I am not sure how to progress further from here - do you have any pointers? Thanks
Hello,
I am stuck trying to calculate the second moment of the geometric distribution.
E(x^2) = Sum (x^2 * f(x))
= Sum (x^2 * p * q^(x-1))
I am not sure how to progress further from here - do you have any pointers? Thanks