Q38Section B (Section B)38 of 60

Expressions that equal the common variance

Suppose $X$ and $Y$ are independent and identically distributed random variables with finite variance $\sigma^2$ . Which of the following expressions is (are) equal to $\sigma^2$ ?

Multiple select: one or more options are correct. Select all of them, then submit — marks need the exact set.

Select every correct option, then submit.

Keyboard: A–D answer · S solution · ←/→ previous/next