Question

Mean and variance of poisson distribution is---------------​

Answer 1

Answer:

From Moment Generating Function of Poisson Distribution, the moment generating function of X, MX, is given by: MX(t)=eλ(et−1) From Variance as Expectation of Square minus Square of Expectation, we have: var(X)=E(X2)−(E(X))2.Mar 28, 2019

Answer 2

Step-by-step explanation:

Mean and Variance of Poisson Distribution. If μ is the average number of successes occurring in a given time interval or region in the Poisson distribution, then the mean and the variance of the Poisson distribution are both equal to μ.