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Stem and Leaf PlotBy: Dylan Henry, Brett Marberger,
and Patty O’Neill
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Definition Stem-and-leaf plots are used to show
the rate at which certain values occur. This would be used if you are a teacher and you need to record test scores.
http://www.purplemath.com/modules/stemleaf.htm
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These are test scores from a Science test.
http://chaversmapcatelog.blogspot.com/2010/12/stem-and-leaf-plot.html
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Necessary Data To have a stem and leaf plot, you need a
single set of data that is organized numerically. The data is organized numerically because it involves numbers and place values.
Mrs. Ellwood’s brain
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If Shaniqua’s grade has not yet been put in, what grade will she need to make the class average 93 if this is a possible grade to get?
Grades for the 2nd Marking Period of Period 7 Honors Algebra 1 Students
6
7
85 6 8 8 9 9
90 1 1 2 2 2 3 3 3 3 4 4 4 5
8 l 5 = 85%
Key
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How to Create a Stem and Leaf Plot
Create a problem Collect data pertaining to the problem Make a big “t” Put the greatest place value digit on
the left side of the “t” in numerical order
Put the least place value digit on the right side of the “t” in numerical order
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Advantages
Shows specific data Organized, ordered data
Dylan’s brain, Brett’s brain, and Patrick’s brain
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Disadvantages
Data can be overloaded on one line and looks awkward.
Not informative for a small set of data
http://www.slideshare.net/bujols/stem-leaf-bar-graphs-and-histogramsPatrick’s brain, Dylan’s brain, and Brett’s brain
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CreditsTyper: Patty
Thinker: Dylan, Brett, PattyProducer: PattyDirector: Dylan
Entertainer: BrettEditor: Spell Check
Stunt Double 1: George WashingtonStunt Double 2: John C. Calhoun
Stunt Double 4: Antonio Lopez de Santa AnnaStunt Double 3: R.I.P
Creepy Guy Watching from Under Table: IdkFood Supplier: Mr. Creeden
The “Kumbaya” Guy: Austin LordiThe Calculator: The Calculator
131%The Computer: A Dell
Above Joke: BrettLuke’s Father: Dylan
The Baddest of them All: BrettHarlem Shake ”Just Do It” Nike