Statistics

The Birthday Problem: A Short Lesson in Probability :

[ Teens/Mature Teens ] - Find out how likely it is that two people in a class have the same birthday. With an explanation of the math behind this problem and a simulation.
Fact Finder Kids' Corner :

[ Kids ] - The U.S. Census Bureau provides this site as part of their American FactFinder effort. The site provides facts about all of the states, in an age-appropriate format. There is a quiz, and an explanation of the Census.
NASS Kids :

[ Kids ] - The National Agricultural Statistics Service provides some basic explanations of statistical terms, as well as games and puzzles.
Percent and Probability :

[ Kids/Teens ] - Learn what a percent is and how to figure probability.
Statistics :

[ Teens/Mature Teens ] - Article from Encarta Encyclopedia defines this branch of mathematics, offers a short history, and provides an overview of the study today.
Using Data and Statistics :

[ Teens/Mature Teens ] - Learn about charts and graphs created from everyday examples. Also, learn to how to compute different types of average values, such as the mean or median.