Stem and leaf plot
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Stem and Leaf Plot. By Max Jones, Mason LeSage, and Kyle Kacala. What is it?. Stem and leaf plots can be used to display quantitative data in an easy way and is also simple to analyze. It is easier because if you were to just write out the numbers it is much more difficult to analyze the data.

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Stem and Leaf Plot

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Stem and leaf plot

Stem and Leaf Plot

By Max Jones, Mason LeSage, and Kyle Kacala


What is it

What is it?

  • Stem and leaf plots can be used to display quantitative data in an easy way and is also simple to analyze. It is easier because if you were to just write out the numbers it is much more difficult to analyze the data.

  • A stem and leaf plot is much like a histogram, and if you turn it on its side it looks similar to a histogram.

  • It is used to find the range, median, and mode easily


Why use it

Why Use It?

  • You would use this graph if the data that is collected is numerical.

  • It is used when there are many numerical values and it is difficult to analyze the data if it is just written out.

  • It can be used with both multiple and single sets of data.


Examples

Examples

Can you identify the median of the data?

Key:6/3=63

This stem and leaf plot represents the number of goals that each team in the

Barclays Premier League has scored. This data can help you to predict who is on

top of the BPL table.


Continued

Continued…

Can you identify the Mode of the data?

Key: 2/3/1= 32, 31

This stem and leaf plot represents the favorite numbers of students throughout the grade. This data can help people because people who play sports will most likely pick their favorite number as their jersey number so it can help to chose which jerseys are made.


Now you try

Now You Try!

Make a stem and leaf plot using the data below.

  • 17, 21, 72, 28, 66, 56, 67, 78, 14, 19, 64, 43, 68, 25, 57


Advantages

Advantages

  • Can handle large sets of data

  • Show range, minimum, maximum, median, and mode

  • Show gaps, clusters, and outliers easily

  • All of the original data is shown


Disadvantages

Disadvantages

  • Can only use numerical data

  • Not visually appealing


Sources

Sources

  • http://espnfc.com/tables?league=ENG.1&cc=5901

  • http://www.mrnussbaum.com/mathdrills/graphing/stemandleaf.htm

  • http://en.wikipedia.org/wiki/Stem-and-leaf_display


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