Khan Academy
Khan Academy: Histograms Review
A histogram displays numerical data by grouping data into "bins" of equal width. Each bin is plotted as a bar whose height corresponds to how many data points are in that bin.
CK-12 Foundation
Ck 12: Types of Data Representation: Graphic Displays of Data
[Free Registration/Login may be required to access all resource tools.] Here you will explore displays of data using bar charts, histograms, pie charts and boxplots, and learn about the differences and similarities between them and how...
National Council of Teachers of Mathematics
Nctm: Illuminations: State Names
Students use multiple representations to display how many times the letters of the alphabet is used in a state name. Concepts explored: stem and leaf, box and whisker plots, histograms.