Do Statistics Really Require 30 Participants?
June 9, 2026
Should the sample size n be greater than 30? If you’ve taken any introductory statistics course or an AP statistics class (or helped your child with it), you’ve encountered the n ≥ 30 rule. The “magic number 5” rule we’ve written extensively about applies (with its important caveats) to problem discovery for usability testing. But the