Stem-and-Leaf Plots

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Stem-and-Leaf Plots

• SWBAT make and interpret a stem-and-leaf plot

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Definition

• Stem-and-Leaf Plot
• A way to organize numerical data so that the
  numbers themselves make up the display

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Building
Legg Mason 40
Blaustein 30
Harbour Court 28
250 W. Pratt Ave 24
Bank of America 37
Commerce Plaza 31
Wachovia Tower 24
Fallon Federal 28
World Trade Center 32
Tremont Hotel 37
Charles Center 25

• Create a T-chart
• Fill in the stem
• The first number
• Fill in the leaves
• The second number
• Rearrange them into numerical order

Stem Leaf
2 3 4
8 4 4 8 5
4 4 5 8 8
0 7 1 2 7
0 1 2 7 7
0
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Examples

• The height of how many buildings are shown?
• How many floors are there in the tallest
  building?
• How many buildings have 40 or more floors?
• What are the range, median and the mode of the
  data?

Stem Leaf
6 4 3 2
0 0 2 2 2 2 4 7
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Examples

• Create a stem-and-leaf plot and answer the
  questions
• Height of buildings in Denver, CO
• 56 54 52 43 41 40 36 35 31 32 34 42
  32 28 26
• What are the range, median, and mode of the data?
• What is a conclusion you can draw abou the data?