CK-12-Basic Probability and Statistics Concepts - A Full Course

(Marvins-Underground-K-12) #1

http://www.ck12.org Chapter 7. Organizing and Displaying Data


7.6 Stem-and-Leaf Plots


Here you’ll learn how to construct stem-and-leaf plots and the importance of stem-and-leaf plots in statistics.


What is the average age of a US president when he is sworn into office? If you collected the ages of all the US
presidents during their inaugurations how could you organize and graph the data at the same time?


Watch This


First watch this video to learn about stem and leaf plots.


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CK-12 Foundation: Chapter7StemandLeafPlotsA


Then watch this video to see some examples.


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CK-12 Foundation: Chapter7StemandLeafPlotsB


Watch this video for more help.


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Khan Academy Stem and Leaf Plots


Guidance


In statistics, data is represented in tables, charts, and graphs. One disadvantage of representing data in these ways is
that the actual data values are often not retained. One way to ensure that the data values are kept intact is to graph
the values in a stem-and-leaf plot. Astem-and-leaf plotis a method of organizing the data that includes sorting
the data and graphing it at the same time. This type of graph uses a stem as the leading part of a data value and a

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