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Baba
Lv 4
Baba asked in Science & MathematicsMathematics · 8 years ago

If X and Y are independent, then Var(X-Y) is equal to:?

2 Answers

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  • Anonymous
    8 years ago
    Favorite Answer

    When you add (or subtract) two independent random variables, the resulting variance is the sum of the two individual variances.

    Var(X+Y) = Var(X-Y) = Var(X) + Var(Y)

  • ?
    Lv 4
    4 years ago

    Var X Y

    Source(s): https://shrinkurl.im/baEgk
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