Data Representations

 

Data Representations

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We have been learning about three new ways to represent data. We have learned about dot plots, frequency tables, and stem-and-leaf plots.

A dot plot is a graphical display of data using dots. It is very similar to pictographs.


A frequency table is a table that shows a set of numbers/scores and their frequency (how many times each one occurs).

Frequency Distribution

A stem-and-leaf plot is a plot where each data value is split into a "leaf" (usually the last digit) and a "stem" (the other digits). For example "32" is split into "3" (stem) and "2" (leaf). The "stem" values are listed down, and the "leaf" values are listed next to them. This way the "stem" groups the scores and each "leaf" indicates a score within that group.

Stem-and-Leaf Plot

Here are the basic steps to creating a stem-and-leaf plot:

Here are some videos about these data representations:




Here are some activities that you can do to practice these skills:






Please let me know if you have any questions!

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