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Birthday paradox: In a random group of only 23 people, there is a better than 50/50 chance two of them have the same birthday. Borel's paradox: Conditional probability density functions are not invariant under coordinate transformations. Boy or Girl paradox: A two-child family has at least one boy.
In common usage, randomness is the apparent or actual lack of definite pattern or predictability in information. [1][2] A random sequence of events, symbols or steps often has no order and does not follow an intelligible pattern or combination. Individual random events are, by definition, unpredictable, but if there is a known probability ...
List of cognitive biases. Cognitive biases are systematic patterns of deviation from norm and/or rationality in judgment. They are often studied in psychology, sociology and behavioral economics. [1] Although the reality of most of these biases is confirmed by reproducible research, [2][3] there are often controversies about how to classify ...
Discover mind-blowing facts about our world that will spark your curiosity and expand your horizons. The post “Enlighten Yourself”: 50 Random Facts That Are Too Interesting To Scroll Past (New ...
As a result of confusion over the meaning of factoid, some English-language style and usage guides discourage its use. [9] William Safire in his "On Language" column advocated the use of the word factlet instead of factoid to express a brief interesting fact as well as a "little bit of arcana" but did not explain how adopting this new term would alleviate the ongoing confusion over the ...
A natural phenomenon is an observable event which is not man-made. Examples include: sunrise, weather, fog, thunder, tornadoes; biological processes, decomposition, germination; physical processes, wave propagation, erosion; tidal flow, and natural disasters such as electromagnetic pulses, volcanic eruptions, hurricanes and earthquakes. [1][2]
While no va does mean "doesn't go" in Spanish, nova was easily understood to mean "new". [6] The common image of Santa Claus (Father Christmas) as a jolly large man in red garments was not created by The Coca-Cola Company as an advertising tool. Santa Claus had already taken this form in American popular culture by the late 19th century, long ...
Estimator. In statistics, an estimator is a rule for calculating an estimate of a given quantity based on observed data: thus the rule (the estimator), the quantity of interest (the estimand) and its result (the estimate) are distinguished. [1] For example, the sample mean is a commonly used estimator of the population mean.