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A pseudorandomly generated bitmap. 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 ...
As a response to an unlikely proposition, "when pigs fly", "when pigs have wings", or simply "pigs might fly".[1]"When Hell freezes over" [2] and "on a cold day in Hell" [3] are based on the understanding that Hell is eternally an extremely hot place.
A randomized controlled trial (or randomized control trial; [ 2] RCT) is a form of scientific experiment used to control factors not under direct experimental control. Examples of RCTs are clinical trials that compare the effects of drugs, surgical techniques, medical devices, diagnostic procedures, diets or other medical treatments. [ 3][ 4]
A wide variety of spellings exist for the English usage of the term, such as tchatchke, tshotshke, tshatshke, tchachke, tchotchka, tchatchka, chachke, tsotchke, chotski, and chochke; the standard Yiddish transliteration is tsatske or tshatshke.
Common and special causes are the two distinct origins of variation in a process, as defined in the statistical thinking and methods of Walter A. Shewhart and W. Edwards Deming. Briefly, "common causes", also called natural patterns, are the usual, historical, quantifiable variation in a system, while "special causes" are unusual, not ...
Thesaurus. A thesaurus ( pl.: thesauri or thesauruses ), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [ 1][ 2] sometimes as a hierarchy of broader and narrower ...
Applications of randomness. Randomness has many uses in science, art, statistics, cryptography, gaming, gambling, and other fields. For example, random assignment in randomized controlled trials helps scientists to test hypotheses, and random numbers or pseudorandom numbers help video games such as video poker .
Infectious disease. A hospital-acquired infection, also known as a nosocomial infection (from the Greek nosokomeion, meaning "hospital"), is an infection that is acquired in a hospital or other healthcare facility. [ 1] To emphasize both hospital and nonhospital settings, it is sometimes instead called a healthcare-associated infection. [ 2]