McGraw Hill
Glencoe: Self Check Quizzes 1 Frequency Tables
Use Glencoe's randomly generated self-checking quiz to test your knowledge of frequency tables. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check It" button...
Palomar Community College District
Palomar College: Frequency Polygon an Example
A step-by-step worked problem demonstrating how to take a set of data and produce a frequency polygon. Hints are provided along the way and the final graph is shown for the user to check.
Oswego City School District
Regents Exam Prep Center: Practice With Organizing and Interpreting Data
Several problems are presented to test your skills in creating and interpreting frequency tables, pie charts, box-and-whisker and stem-and-leaf plots.
University of Illinois
University of Illinois: Rollin' Rollin' Rollin'
This page from the University of Illinois is the beginning of a series that demonstrates the difference between the mean and median of a group of numbers. The sites use bar graphs to display the data.