We are pleased to announce the release of NCSS 8, the latest edition of our statistical analysis and graphics software. We are confident you will find the enhanced interface and greatly improved graphics system highly suitable for your research needs.

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NCSS 8 is Windows 7 Compatible

PASS 11 is the best power analysis and sample size tool on the market. No other sample size program covers as many statistical procedures. PASS 11 adds over 17 new procedures and features is now available. Upgrade to PASS 11 now!

Click here for more information about what's new in PASS 11.

PASS 11 is Windows 7 Compatible

PASS Training

A 4-week, online course on sample size and power, featuring PASS, is now being offered through statistics.com. The course is taught by Dr. Thomas P. Ryan. 

Click here for more information.