One value in a data set is far larger than every other value. What is that value called?

1. An outlier is a value in the data set that is not typical of the rest of the set. 2. It is usually much greater or much less than all the other values. 3. A single outlier can change the range dramatically, since the range is very sensitive to outliers. 4. Quartiles and deciles are positions that split a sorted data set into equal groups instead. _Source: Siyavula Mathematics Grade 10 (Everything Maths, CC BY 4.0), Chapter 10: Statistics_