The range in math is a statistical measure that represents the difference between the lowest and highest values in a set of data. It is a simple calculation that can be done by subtracting 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.

It is important to note that the range can sometimes be misleading when there are extremely high or low values in the set. In such cases, it may be better to use other measures of variability, such as the interquartile range or standard deviation.

It is also worth mentioning that the term "range" can have a different meaning in the context of functions. In this case, the range refers to all the output values of a function.

In summary, the range in math is a measure of the spread of data that represents the difference between the lowest and highest values in a set of data.