In math, the range is a measure of the spread or variability of a set of data. It is defined as the difference between the highest and lowest values in the set. To find the range of a set of numbers, you simply subtract the lowest value from the highest value. For example, if you have the set {3, 5, 8, 10, 12}, the range would be 12 - 3 = 9. The range is a fundamental concept in statistics used to analyze data and make useful interpretations. It tells us how far the greatest value of the set is from the smallest number, and a wider range signifies substantial variability, whereas a narrower range shows low variability in a distribution. However, the range can sometimes be misleading when there are extremely high or low values, and in such cases, it may be better to use other measures of variability such as interquartile range or standard deviation.