Virginia Department of Education
How Much is that Tune?
Tune in for savings! Scholars investigate pricing schemes for two different online music download sites. After comparing the two, they determine the numbers of songs for which each site would be cheaper.
University of Illinois
University of Illinois: Line Graphs
Line graphs are shown and explained here. You can learn what kind of data is best represented using a line graph. There are also line graphs with questions and answers available to help you learn how to read them.
Other
Stat Soft: Statistics Glossary
Dozens of statistical terms are defined and illustrated in this glossary.