6th Grade Math Textbook, Progress

Stem-and-Leaf Plots

9-8

Building Number

of Floors

Legg Mason Building 40

Blaustein Building 30

Harbour Court 28

250 W. Pratt St. 24

Bank of America Building 37

Commerce Place 31

Wachovia Tower 24

Fallon Federal 28

World Trade Center 32

Tremont Plaza Hotel 37

Charles Center South 25

Stem Leaf

2 8 4 4 8 5

3 0 7 1 2 7

4 0

Stem Leaf

2 4 4 5 8 8

3 0 1 2 7 7

4 0

Heights of Buildings in

Baltimore, Maryland

(No. of Floors)

Key: 2 
8 represents 28

Some of the tallest buildings in Baltimore, Maryland, are listed in the

table below. You can organize and display the same data in a stem-

and-leaf plot. A stem-and-leaf plot is a convenient way to organize

numerical data so that the numbers themselves make up the display.

To make a stem-and-leaf plot:


Draw a chart and label two columns as

Stemand Leaf, as shown. The front-end

digits of the data are the stems. Write

them in order in the stem column.


The leavesare the ones digits.

Write each leaf to the right of

its stem in the leaf column.


Rewrite the leaves in order

from least to greatest.

• Write a Keyto show the meaning
  of each piece of data in the plot.
  Then write a titlefor the plot.

Range: 40 
 24  16

Median:Count to find the (middle) number, 30.

Mode:There are 3 modes — 24, 28, and 37.

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