NCSS, PASS, and GESS

Click on the links below to download product updates. For products marked with a "*" NCSS and PASS have been split into two separate programs.

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

PASS 2008 Update*
Most Recent Update: January 14, 2010

PASS 2005 Update
Most Recent Update: November 14, 2007

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

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

PASS 2002 Update
Most Recent Update: April 23, 2007

*PASS has been split from NCSS.

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

NCSS 2007 Update (Version 1)*
Most Recent Update: February 19, 2010

NCSS 2007 Update (Version 0)
Most Recent Update: November 14, 2007

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

NCSS 2004 and NCSS 2001 Updates
Most Recent Update: 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)*
Most Recent Update: February 19, 2010

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

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

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Click here to view the PDF order forms.
Click here to view product price lists.

System Requirements
PASS 2008, NCSS 2007, and GESS 2006 run on 32-bit and 64-bit systems with Windows 7, Vista, XP, 2000, NT, ME, 98, or 95. Requires pentium-class computer with at least 32 MB of RAM. Requires 200 MB of hard disk space. Requires Adobe Reader® version 7 or later to use the NCSS, PASS, and GESS Help Systems.

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 is one of the most accurate statistical analysis programs available. NCSS calculates 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).