Question

The stem-and-leaf plot shows the ages of a group of friends. Find the median age.
Stem|Leaf
2|8
3|1 2 4
4| 2 7 9
5|4
Key: 2|8=28 years

Answer 1

To find the median age, we need to determine the middle value in the data set.

First, list the ages in ascending order: 21, 22, 24, 27, 29, 28, 34, 42, 49, 54.

The median is the middle value when the data set is ordered. Since there are 10 numbers, the median will be the average of the 5th and 6th numbers. In this case, the median is (29 + 28)/2 = 28.5

Therefore, the median age of the group of friends is 28.5 years.