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is a discrete-time stochastic process consisting of finite or infinite sequence of independent random variables X1, X2, X3,..., such that
In other words, a Bernoulli process is a sequence of independent identically distributed Bernoulli trials. The two possible values of each Xi are often called "success" and "failure", so that, when expressed as a number, 0 or 1, the value is said to be the number of successes on the ith "trial". The individual success/failure variables Xi are also called Bernoulli trials.
Random variables associated with the Bernoulli process include