Find the standard deviation of the Poisson random variable. Round to three decimal places.
-Suppose X has a Poisson distribution with parameter ʎ = 1.300. Find the standard deviation of X.
A)1.690
B)1.14
C)1.300
D)1.000

Question

Find the standard deviation of the Poisson random variable. Round to three decimal places.
-Suppose X has a Poisson distribution with parameter ʎ = 1.300. Find the standard deviation of X. 
A)1.690
B)1.14
C)1.300
D)1.000

Quizplus · Accepted Answer

The standard deviation of a Poisson random variable is the square root of its mean (λ), so for λ = 1.300, the standard deviation is sqrt(1.300) ≈ 1.140.

Find the Standard Deviation of the Poisson Random Variable