The Normal Distribution and the 68-95-99.7 Rule (5.2)
Why the open web links it
Explains the normal distribution and the 68-95-99.7 rule with clear examples and visualizations.
Linked by 8 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including unifi.it, libretexts.org, daytrading.com, ponfish.com, affectautism.com.