On a stem-and-leaf plot, each data value is broken into a stem and a leaf, where the digit on the left is the stem and the digit on the right is the leaf.
We want to make a stem-and-leaf plot of the given ages of park volunteers.
Ages of Park Volunteers
13
17
40
15
48
21
19
52
13
55
60
20
The first step is to order the data from least to greatest.
13,13,15,17,19,20,21,40,48,52,55,60
Remember that on a stem-and-leaf plot, each data value is broken into a stem and a leaf, where the digit on the left is the stem and the digit on the right is the leaf. Because our data values range from 13 to 60, we will use tens digits for the stems and the ones digits for the leaves. For numbers with one digit, the stem will be 0.
1 3, 1 3, 1 5, 1 7, 1 9, 2 0, 2 1, 4 0, 4 8, 5 2, 5 5, 6 0
We will write the stems to the left of the vertical line and the leaves for each stem to the right of the vertical line. Remember that if there is a repeated number, it will appear on the plot the number of times it is repeated.
r|cccc
1 & 3 & 3 & 5 & 7 & 9
2 & 0 & 1
3 &
4 & 0 & 8
5 & 2 & 5
6 & 0
Key: 4| 0 means 40 years
This is the stem-leaf plot of the ages of park volunteers.
