Question

find the range for the group of data items. 17, 18, 19, 20, 21 the range is. (simplify your answer.)

Explanation:

Step1: Identify maximum value

The maximum value in the data - set 17, 18, 19, 20, 21 is 21.

Step2: Identify minimum value

The minimum value in the data - set 17, 18, 19, 20, 21 is 17.

Step3: Calculate the range

The formula for the range of a data - set is $Range = Maximum - Minimum$. So, $Range=21 - 17$.
$21-17 = 4$

Answer:

4