Question

Find the range. 3 –9 7 –1 5 –4 2 2 16 8 –1

Answer 1

The range is the distance between the minimum data value and the maximum: $\text{Maximum value}-\text{Minimum value}=\text{Range}$

$\text{Given values: }3, -9, 7, -1, 5, -4, -2$
Your minimum value is -9.
Your maximum value is 7.

Therefore: $\text{Range}\rightarrow\text{Maximum value}-\text{Minimum value}\rightarrow7-(-9)$
$\rightarrow\text{Subtracting Negative Values}\rightarrow7+9=16$

**Subtracting a negative value $-a$ is like adding the product $(-1)(-a)$, which would translate to the same thing as adding the product $(1)(a)$, or adding $a$.