This eliminates the need to know the actual date of the academy award ceremony each year. A summary of this information is given in tables 1 and 2. The leaves give the unit's digits of the ages and appear to the right of the stem. Thus, Cher's age of 41 has a stem of 4 and a leaf of 1. You can see that five best actresses received Oscars at age 41.
Students find it interesting that the five greatest ages are grouped away from the rest.
These distant entries are called outliers , a term that will be defined later. The upper extreme is age 74, Katharine Hepburn's age in 1981 when she won an Oscar for her role in On Golden Pond . At the other extreme is the age-21 entry for Marlee Matlin for her 1986 performance in Children of a Lesser God . Although age 21 is the lower extreme, it is not an outlier. It is sometimes possible to learn more from the data if they are not as tightly grouped together.