The user's manuals for Visible Statistics and Visible Probability are available below:

• Visible Statistics User's Manual (3.1 MB PDF)
• Visible Probability User's Manual (165k PDF)

Here is an Introduction to Basic Statistics (HTML) which you may find useful if you are unfamiliar with the basics of statistics.

We also offer a variety of video tutorials explaining some of the operations you can perform using our tools. You will need Apple's QuickTime software to view the videos.

• Introduction To Data Sources (2.8 MB Quicktime)
• Data Entry Part 1 (3.1 MB Quicktime)
• Data Entry Part 2 (1 MB Quicktime)
• How Groups Work (1.7 MB Quicktime)
• Performing Basic Analysis (2.6 MB QuickTime)