sto·chas·tic
   
–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

—Related forms
sto·chas·ti·cal·ly, adverb