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nQuery Advisor is the industry standard for Sample Size and Power determination.  nQuery Advisor® helps you find to the most efficient sample size.



UNC-Chapel Hill has a campus-wide license with Statistical Solutions for the nQuery Advisor software. The license is annual and is available to faculty, staff and students.

nQuery Advisor® licenses for existing installations must be renewed annually. Licenses expire annually on September 30st. There will be a notice 30 days prior to expiration, software will not work once software expires. For new installations please complete steps 1 and 2, for renewals please complete step 2 only.

1. Download and install nQuery Advisor

2. Email the following information to obtain an activation key.




Status: Faculty, Staff or Student

You may also run nQuery Advisor through the Research Computing’s Virtual Computing Lab (VCL). Click the following link for Getting Started on VCL.

You may acquire technical assistance from the ITS Service Desk by calling 919-962-HELP or by email