To find the range of a set of numbers, you subtract the smallest number from the largest number.
From the provided numbers:
Set: 3, -9, 7, -1, 5, -4, 2
- Identify the largest number: 7
- Identify the smallest number: -9
Now, calculate the range:
\[ \text{Range} = \text{Largest} - \text{Smallest} = 7 - (-9) = 7 + 9 = 16 \]
Therefore, the range of the set of numbers is 16.