33.8.7 The 3σ Rule and Applications of the Normal Distribution
33.8 Common Distributions and the Normal Distribution
Point 7 of 7
33.8.7 The 3σ Rule and Applications of the Normal Distribution
Core idea
Almost all the data falls within three σ on either side of the mean, and anything outside counts as "unusual," quietly setting the stage for statistical judgment
Module goal. Get to know three classic distribution models, then step from discrete to continuous, laying the groundwork for population distributions in statistics
eastmath.com · 33.8 Common Distributions and the Normal Distribution · 33.8.7 The 3σ Rule and Applications of the Normal Distribution