Page 186 - Math Course 3 (Book 2)

Understanding Stem-and-Leaf Plots

MO. 12 - L2b B. What is the greatest percent of people living in
one U.S. state that were born in Mexico?
Interpret Data in Stem Leaf

Stem-and-leaf Plots 0 0 0 0 1 1 2 2 3 4 4 5 5 5
6 6 8 8 8
0
1 0 1 4 4 7
2 1 2 3 8 9
Vocabulary A-Z 3 1 2 3 5 5 9 9

Let us learn some vocabulary 4 0 1 2 3 3 3 4 6 8
2 6 6
5
6 4 6
7 4
back-to-back stem-and-leaf plot 3|1 = 31%
Two sets of data can be compared using a back-to-
back stem-and-leaf plot.
Answer 74%
Example of scores of 2 teams

Falcons Stem Cardinals
7 6 5 5 3 2 2 2 6 2 4 C. What is the median percent of people living in
8 8 8 5 4 7 0 2 2 5 7 9 one U.S. state that were born in Mexico?
1 0 0 8 1 3 4 6 6 8 9 9 Stem Leaf
1|8 = 81 points 8|6 = 86 points 0 0 0 0 1 1 2 2 3 4 4 5 5 5
0
6 6 8 8 8
1 0 1 4 4 7
The leaves for one The leaves for the 2 1 2 3 8 9
set of data are on one other set of data are 3 1 2 3 5 5 9 9
side of the stem on one the other side
of the stem 4 0 1 2 3 3 3 4 6 8
5 2 6 6
6 4 6
Let’s Begin 7 4
3|1 = 31%

Real World Examples Answer 22.5%

MEXICO AGRICULTURE
The stem-and-leaf plot lists the percent of people The yearly production of honey in California and
in each state in 2004 that were born in Mexico, Florida is shown for the years 2000 to 2004, in
rounded to the nearest whole number. millions of pounds. (Source: USDA)

A. What interval contains the most percentages? A. Which state produces the most honey?
Stem Leaf
0 0 0 0 1 1 2 2 3 4 4 5 5 5
0 6 6 8 8 8 California Florida
1 0 1 4 4 7 7 1 4
2 1 2 3 8 9
3 1 2 3 5 5 9 9 8 4 2 0 0 2 4
4 0 1 2 3 3 3 4 6 8 2 1 3
5 2 6 6
6 4 6 2|3 = 32 million lb 2|0 = 20 million lb
7 4
3|1 = 31%
Most of the data occurs in
Answer Answer California
the 0-9 interval

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