The stem-and-leaf plot shows the ages of a group of friends. Find the median age.
Stem: 2, 3, 4, 5
Leaf: 8, 124, 279, 4
Key: 2.8 = 28 years
To find the median age, we first need to put the ages in order:
24, 27, 28, 29, 34, 37, 38, 39, 44
There are 9 ages in total, which is an odd number, so the median will be the middle value when the ages are ordered.
The middle value is the fifth age, which is 34.
Therefore, the median age of the group of friends is 34 years old.