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 number of hats sold each day.
Hats Sold Each Day
5
18
12
15
21
30
8
12
13
9
14
25
The first step is to order the data from least to greatest.
5,8,9,12,12,13,14,15,18,21,25,30
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 5 to 30, 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.
0 5, 0 8, 0 9, 1 2, 1 2, 1 3, 1 4, 1 5, 1 8, 2 1, 2 5, 3 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
0 & 5 & 8 & 9
1 & 2 & 2 & 3 & 4 & 5 & 8
2 & 1 & 5
3 & 0
Key: 3| 0 means 30 hats
This is the stem-leaf plot of the hats sold each day.
