Many applications of probability and statistics are concerned with
the repetition of an experiment. We call each repetition a
**trial** and we are particularly interested in cases, in
which the experiment (each trial) has **only two possible
outcomes**: Success or failure, true or false, 0 or 1.

To analyze repeated trials of an experiment, which has two possible
outcomes, we require knowledge of **factorials**,
**binomial coefficients** and **Bernoulli
trials**.

On the basis of those prerequisites we will learn about the
**binomial distribution**, which is a **probability
distribution** for the number of successes in a sequence of
**Bernoulli trials** (Weiss 2010).