Transcript Stem and Leaf Plots

Stem and Leaf Plots
Chapter 5 Lesson 4
Stem-and-Leaf Plots
Number of Dogs
Walked Each
Month
20, 29, 14, 52
34, 45, 30, 48
Luke and Aimee started a dog-walking business in
which they walk dogs for people. The number of
dogs they walk varies from month to month. In 8
months, they recorded the number of dogs they
walked each month. These are shown above.
Number of Dogs
Walked Each
Month
20, 29, 14, 52
34, 45, 30, 48
These numbers can
be organized using a
stem-and-leaf plot.
First, we must put them in
numerical order (least to
greatest).
14, 20, 29, 30, 34, 45, 48, 52
The TENS
digit in each
number
The ONES
digit in each
number
Stem Leaf
1
Notice that the
stems AND leaves
are arranged in
numerical order.
4
2 0 9
3 0 4
4 5 8
5 2
Key 3|0 = 30
More Stem-and-Leaf Plots
Ages of Relatives
Stem Leaf
0
1
2
3
6 7
0 0
3 9
Points Scored per
Game
Stem Leaf
1
1 5
2
3
0 4
4
2 2 8
Note:
6 8 9
Numbers less than ten can be displayed.
More than one number (10) can be displayed.
Some stems may have no leaves.
Stem-and-Leaf plots still have titles.
Average Weights of the Top 10
Dog Breeds
Rank
1
2
3
4
Breed
Weight (lb)
Labrador Retrievers
Golden Retrievers
German Shepherds
Dachshunds
Standard
Miniature
5
Beagles
6
Yorkshire Terriers
7
Poodles
Standard
Toy
8
Boxers
9 Chihuahuas
10 Shih Tzu
67
75
81
27
20
20
7
75
10
71
7
17
Stem
Leaf
0
1
2
3
4
5
6
7
7 7
0 7
007
8
1
7
155
Which stems have the
most leaves?
2 and 7
Which types of dogs seem
to be more popular, large
or small?
large
Which stems have no leaves?
3, 4 and 5
How many breeds are
less than 30 pounds?
7
12
How many categories of
dogs are shown on the plot?
Stem
Leaf
0
1
2
3
4
5
6
7
7 7
0 7
007
8
1
7
155
The End
Man to dog trainer: "Every time a bell rings, my
dog goes into the corner."
Dog trainer: "That's OK, he is a Boxer."