Statistics: Range

If $$-9 \le x\le 9$$, then what is the range of the possible values of $$x$$?
Correct. [[snippet]] Subtract the smallest number from the largest one in the list. >$$9 - (-9) = 9 + 9 = 18$$. Hence, 18 is the range.
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18
9
4.5
0
-4.5

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