If the outcomes of a variable follow a Poisson distribution,then them
A)mean equals the standard deviation.
B)median equals the standard deviation.
C)mean equals the variance.
D)median equals the variance.

Question

Quizplus · Accepted Answer

In a Poisson distribution, the mean equals the variance. This is a characteristic property of Poisson distributions. However, the standard deviation is equal to the square root of the variance, so it is not necessarily equal to the mean or median.

If the Outcomes of a Variable Follow a Poisson Distribution,then