Data Representations

Data Representations

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).

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.

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

Here are some videos about these data representations:

Stem and Leaf Plot

Frequency Tables and Dot Plots

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

Reading Dot Plots and Frequency Tables

Reading Stem and Leaf Plots

Creating Dot Plots

Creating Frequency Tables

Frequency Charts

Please let me know if you have any questions!