Final answer:
The measure of variation based on extreme values is easy to compute through the range.
Step-by-step explanation:
The measure of variation that is based on the two extreme values and may reflect an extreme measurement that is not entirely representative of the data set's variation is easy to understand and compute through the sample range.
The range is calculated by subtracting the smallest value in the data set from the largest value. It provides a simple measure of how spread out the data values are.