If X is a Poisson variable such that P(X=1) = P(X=2) then the variance is

CA Foundation · Quantitative Aptitude · PYQS · January 2025
If X is a Poisson variable such that P(X=1) = P(X=2) then the variance is
(A) A. 1
(B) B. 2
(C) C. √2
(D) D. 3

Suggested Answer and Working Notes:

Correct Answer: Option (B)

B. 2

Topics: Part-C: Statistics

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