1. COURSE 3 LESSON 10-3
Stem-and-Leaf Plots
Find the median and mode of the data in this stem-and-leaf plot.
The 3’s represent repeated leaves.
Use them for the mode.
The eight leaves means that there
are eight items.
Key: 14 | 3 means 14.3.
Since there are eight items, you should average the fourth and
fifth items, 14.3 and 14.7, to find the median.
The median is The mode is 14.3.
10-3

2. Stem-and-Leaf Plots
COURSE 3 LESSON 10-3
Compare the number of basketball and baseball cards using the mode of each data set.
Basketball and Baseball Cards
Basketball Baseball
Key: means | 2 | means 29
The mode for basketball cards is 19 cards,
while the mode for baseball cards is 32 cards.
This measure of central tendency gives the impression that the number of baseball cards is greater than the number of basketball cards.
10-3

3. Stem-and-Leaf Plots 1. Make a stem-and-leaf plot for the data.
COURSE 3 LESSON 10-3
Stem-and-Leaf Plots
1. Make a stem-and-leaf plot for the data.
21  39  20  22  22  31  40  33
2. Use your stem-and-leaf plot from Question 1 to find the median and mode.
median: 26.5; mode: 22
10-3