In mathematics, range refers to the difference between the highest and lowest values in a data set. It is a measure of dispersion, or how much a given data set is stretched out from smallest to largest. To find the range, one needs to subtract the lowest value from the highest value in the set. For example, in the set {4, 6, 9, 3, 7}, the lowest value is 3, and the highest is 9, so the range is 9 - 3 = 6. Range is a fundamental concept in statistics used to analyze data and make useful interpretations. It tells us the variability of the data or how the data points are spread or how far apart the highest value is from the lowest. However, the range can sometimes be misleading when there are extremely high or low values. In algebra, range refers to the range of a function, which is the set of values of its outputs.