random variable

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random variable

n.
A variable whose values are random but whose statistical distribution is known.

random variable

n
(Statistics) statistics a quantity that may take any of a range of values, either continuous or discrete, which cannot be predicted with certainty but only described probabilistically. Abbreviation: rv

ran′dom var′iable


n.
a statistical quantity that can take any of the values of a specified set in accordance with an associated probability distribution.
Also called variate.
[1935–40]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.random variable - a variable quantity that is randomrandom variable - a variable quantity that is random  
variable quantity, variable - a quantity that can assume any of a set of values
References in periodicals archive ?
We also have checked whether each generation's opinions can be explained by random variation or if the differences vary in a statistically significant way from the fourth generation.
The timing and velocity of each interval can be dynamically programmed and/or determined within selectable ranges of random variation for a more natural/human feel.
Tony Roberts, deputy director of clinical effectiveness for South Tees, said: "The trust is pleased to see that the HSCIC's SHMI figures show that the trust's mortality has remained 'as expected' - that is within the range of values that can be anticipated from random variation.
When faced with apparently random variation in prices the first thing a statistician does is smooth out these fluctuations by computing how prices are changing on average, through a moving average.
The mini-mum still exists under the final rule, but now, if the savings aren't just due to a random variation in costs, the ACO can share in savings starting with the first dollar.
Since 1983 when The MIT Press published the first edition, a recognition of the reality of complex random variation has been pushed by the need to quantify and manage risks in complex systems, says Vanmarcke (Princeton U.
Random effects were expressed as SDs for random variation between groups at each level, e.
When assessing for length effects, we recommend using a binomial GLMM with between-site random variation in both the vessel and length effects.
Rosenberg theorizes that the actual DNA sequences responsible for particular developmental outcomes are "frozen accidents" of random variation and natural selection.
Bias Random variation Systematic variation Unsystematic caused by Caused by known forces unknown forces New or unanticipated Always present Unpredictable Range is predictable
This book's central thesis is that God uses random variation and natural selection (among other methods) to accomplish his purposes.
One of the first concepts that must be understood in measuring is the difference between random variation and determinate or systemic problems.