Finding the range for a data set

The range is a straightforward measure of the difference between values in a data set. To find the range, we need to subtract the lowest value from the highest value, ignoring the others.

Example 1:

Find the range for the set of data 20, 31, 33, 35, 42, 50, 60, 67.

Solution:

The range is equal to the absolute difference between the minimum and maximum values.

So, 67 − 20 = 47.

Answer: The range for a given data set is 47.

Example 2:

In {4, 6, 9, 3, 7} the lowest value is 3, and the highest is 9.

Solution:

The range for a given data set is 9 - 3 = 6.

Answer: 6