If X and Y are independent then SD (X − Y) is________________? | MCQ Hive

Statistics Mcqs

Q If X and Y are independent then SD (X − Y) is________________?

A A. Sd(x)−sd(y)
B B. Sd(x)+sd(y)
C C. Sd(x)+sd(y)−−−−−−−−−−−−−−√
D D. Var(x)+var(y)−−−−−−−−−−−−−−−√

Previous Standard deviation is calculated from the Harmonic Mean…

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