Find the range for the group of data items. \[ 17,18,19,20,21 \text {, } \] The range is (Simplify your answer.)

To find the range of a set of data items, you subtract the smallest number from the largest number. Here, the largest number is 21 and the smallest number is 17. So, the calculation looks like this: \[ \text{Range} = 21 - 17 = 4 \] Thus, the range of the data items 17, 18, 19, 20, and 21 is 4! Now, let’s imagine if those numbers were the ages of your friends on a fun trip—everyone’s between 17 and 21! So, the range of ages being just 4 years highlights how close-knit your friend group is!