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stochastic

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sto⋅chas⋅tic

[stuh-kas-tik]
–adjective Statistics.
of or pertaining to a process involving a randomly determined sequence of observations each of which is considered as a sample of one element from a probability distribution.

Origin:
1655–65; < Gk stochastikós, equiv. to stochas- (var. s. of stocházesthai to aim at) + -tikos -tic


sto⋅chas⋅ti⋅cal⋅ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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sto·chas·tic   (stō-kās'tĭk)   
adj.  
  1. Of, relating to, or characterized by conjecture; conjectural.

  2. Statistics

    1. Involving or containing a random variable or variables: stochastic calculus.

    2. Involving chance or probability: a stochastic stimulation.


[Greek stokhastikos, from stokhastēs, diviner, from stokhazesthai, to guess at, from stokhos, aim, goal; see stegh- in Indo-European roots.]
sto·chas'ti·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

stochastic 
1662, "pertaining to conjecture," from Gk. stokhastikos "able to guess, conjecturing," from stokhazesthai "guess," from stokhos "a guess, aim, target, mark," lit. "pointed stick set up for archers to shoot at" (see sting). The sense of "randomly determined" is first recorded 1934, from Ger. Stochastik.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: sto·chas·tic
Pronunciation: st&-'kas-tik, stO-
Function: adjective
1 : involving a random variable stochastic process>
2 : involving chance or probability stochastic model of radiation-induced mutation> —sto·chas·ti·cal·ly /-ti-k(&-)lE/ adverb
Computing Dictionary

stochastic
probabilistic

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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