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Interpreting Graphical Displays of Distributions of Univariate Data
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| | Dotplot, Stemplot, Histogram, Cumulative Frequency Plot
Exploring Data
This site offers a wealth of information for both the new and experienced statistics teacher. You will find step-by-step tutorials, activities, and worksheets for exploring histograms, stemplots, dotplots, and boxplots in addition to other topics in the statistics curriculum.
 Exploring Data
The STAR Library
The STAR Library contains two activities for exploring data displays: "Histogram Sorting" and "Breaking the Code -- A Graphical Exploration Using Bar Charts." (Follow the link that says, "Click here to view a list of all activities published in the STAR Library.")
The STAR Library
Rossman/Chance Applet Collection
Histograms are very useful, but care needs to be taken in constructing and interpreting them. The Histogram Bin Width java applet from the Rossman/Chance Applet Collection allows the user to vary the bin-width of the histogram.
Rossman/Chance Applet Collection
Histograms and Bin Width
This applet from the Rice Virtual Lab in Statistics shows the user how to identify "good" and "bad" histograms by using a "cross-validation" criterion. This applet allows the user to vary the histogram bin widths and shift bin locations. The "cross-validation" is then reported to show the "goodness" of the histogram.
Histograms and Bin Width
R. Webster West's Java Applet
This applet uses a data set from the Old Faithful geyser in Yellowstone Park. The application allows the user to vary the bin-width of the histogram to show students how the number of bins affects the shape. For larger bin widths, the bimodal nature of the Old Faithful data is no longer apparent.
R. Webster West's Java Applet
Gallery of Data Visualization
The Best and Worst of Statistical Graphs by Michael Friendly provides examples of good and bad statistical graphs in order to allow the user to examine the contrast between the two.
Gallery of Data Visualization
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