If X and Y are two random variables then v( x+y ) is:

CA Foundation · Quantitative Aptitude · MTP · June 2024
If X and Y are two random variables then v( x+y ) is:
(A) A. v (x) + v(y)
(B) B. v(x) + v(y) – 2 v (x,y)
(C) C. v(x) + v(y) + 2 v (x,y)
(D) D. v (x) – v (y)

Suggested Answer and Working Notes:

Correct Answer: Option (A)

A. v (x) + v(y)

Topics: Part-C: Statistics

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