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The PASS 13 free trial gives you an opportunity to evaluate the software before you purchase it.

When you click the download button with a valid email address, you can begin downloading the PASS 13 setup file.

You will receive an email with your trial license key that allows you to use the software for 7 days. If you choose to purchase the software, you can use the license key you receive to convert the trial version into the fully functional version. You will not need to reinstall PASS 13 after you purchase a license.

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"I purchased NCSS last week and have been extremely impressed with the product so far. The documentation is superb... Especially strong is the importing of files from Excel and other statistics programs..."

Gary Brager, Baltimore County Public Schools

"I really love this version of NCSS and as teacher and researcher in a medical field I can say there aren't many things I miss in it... The help system is another strong feature; the transformations interface is one of my favorites as well."

Dr. Adrian Buzea