SUBCATEGORY03 PUBLISHED GUIDES
Statistics
Laws and principles filed under Mathematics & Probability / Statistics.
PUBLISHED GUIDES
Statistics
Every guide includes meaning, mechanism, applications, limitations, related concepts, and traceable references.
Statistics019
Asymptotic statistical theorem
Central Limit Theorem
Under broad conditions, properly standardized sums or averages of many independent contributions approach a normal distribution.
Statistics088
Statistical selection effect
Regression to the Mean
When two measurements are imperfectly correlated, units selected for an extreme first value tend to be less extreme on a subsequent measurement.
Statistics089
Aggregation reversal
Simpson's Paradox
A trend that appears within every relevant group can weaken, disappear, or reverse after the groups are combined with different weights.