NCSS, PASS, and GESS

Click on the links below to download product updates. 

PASS Updates

PASS 11 Update
Current Version: 11.0.8
Released: December 2, 2011
What problems have been fixed by this update?

PASS 2008 Update
Current Version: 08.0.16
Released: January 27, 2011
What problems have been fixed by this update?

PASS 2005 Update
Released: November 14, 2007

PASS 2005 Update (NCSS 2007 User)
Released: November 14, 2007

PASS 2005 Update (NCSS 2004 User)
Released: April 23, 2007

PASS 2002 Update
Released: April 23, 2007

NCSS Updates
What problems have been fixed by recent NCSS updates?

NCSS 2007 Update (Version 1)*
Current Version: 07.1.21
Released: June 1, 2011

NCSS 2007 Update (Version 0)
Released: November 14, 2007

NCSS 2007 Update (PASS 2005 User) (Version 0)
Released: November 14, 2007

NCSS 2004 and NCSS 2001 Updates
Released: April 23, 2007

*In Version 1, NCSS has been split from PASS.

NCSS & GESS Updates
What problems have been fixed by recent GESS updates?
What problems have been fixed by recent NCSS updates?

NCSS 2007 and GESS 2006 Update (Version 1)*
Released: June 1, 2011

NCSS 2007 and GESS 2006 Update (Version 0)
Released: November 14, 2007

*In Version 1, NCSS and GESS have been split from PASS.

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Minimum System Requirements
Click on one of the links below to view the minimum system requirements for NCSS and PASS products:
PASS 11
PASS 2008
NCSS 2007
Previous Versions

Accuracy
We at NCSS have put a great deal of effort into finding the most accurate algorithms possible. The programs have been tested and verified over and over, both by us and by our customers. Each routine has been verified against textbooks, journal articles, and, where possible, other software. NCSS and PASS are some of the most accurate statistical analysis programs available. NCSS and PASS calculate with seventeen-digit, double-precision accuracy.

Guarantee
If you are not completely satisfied with an NCSS product during the first 30 days for any reason, return the program for a full, prompt refund (excluding shipping).