Dear NCSS / PASS User,
We are pleased to announce the release of PASS 13, the latest edition of our sample size software. We are confident you will find this to be the most comprehensive sample size software tool on the market. Learn about PASS 13
New ProceduresPASS 13 adds over 25 new power and sample size procedures including one-way nonparametric tests, variance tests, correlation tests, exponential distribution confidence intervals, Kappa and Coefficent Alpha confidence intervals, and more
. See the new procedures
New FeaturesPASS 13 introduces 3D power and sample size plots, includes multiple value selection improvements, and has an expanded help center
. New feature details
How to Order
Just Purchased PASS 12?
If you purchased PASS 12 after October 1, 2013, please contact us before April 15, 2014 to claim your free upgrade to PASS 13.
Thank you for choosing PASS!
Demo VideoWatch a brief video highlighting the primary features of PASS. Watch demo
Getting Started VideoThis video steps through an example of a sample size calculation in PASS 13 and highlights the primary features. Getting started video