What does the word range mean in mathematical terms?

Answer 1

The RANGE is the difference between the lowest and highest values.

In this case 100 - 80 = 20, so the range is 20. The range tells you

something about how spread out the data are. Data with large ranges

tend to be more spread out.
Range is the difference between the highest and lowest numbers in the set.

EXAMPLE:

3, 4, 6, 7, 10, 13, 16, 19, 21, 24, 26

26 - 3=23

range is 23.