Range (mathematics)

In mathematics, the range is a concept which has various meanings in different topics:

 The range of a function , also written as  or , is the set of elements that the function outputs.
 In statistics, the range is the difference between the lowest and highest values. For example. in {4, 6, 9, 3, 7}, the lowest value is 3, and the highest is 9, so the range is 9-3 = 6. 
 In some occasions, the term "range" can also refer to the mathematical concept of interval.

 Related pages 
 Surjective function

 References 

Category:Functions and mappings
Category:Mathematics