**In mathematics, the range of a set of data refers to the difference between the smallest and largest number.** For the set of data 1,2,3,4,7, the range is equal to 7 minus 1 or 6.

There are many useful properties of sets of data that are used in basic mathematical analysis, including the range. Additionally, the mean, or average, of the data can be calculated by summing all the numbers and dividing by the amount of numbers in the data. Other common properties are the mode, which is the most common number in the data set, and median, which is the number that is in the middle of the set when ordered by number size.