Statistical experiment

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A statistical experiment is a random or nondeterministic experiment. Its features are that:

each experiment is capable of being repeated indefinitely under essentially unchanged conditions.
Although we are in general not able to state what a particular outcome will be, we are able to describe the set of all possible outcomes of the experiment
As the experiment is performed repeatedly, the individual

outcomes seem to occur in a haphazard manner. However as the experiment is repeated a large number of times, a definite pattern or regularity appears.