.. _variables-binomial_uncertain-probability_per_trial: """"""""""""""""""""" probability_per_trial """"""""""""""""""""" A distribution parameter for the binomial distribution .. toctree:: :hidden: :maxdepth: 1 **Specification** - *Alias:* prob_per_trial - *Arguments:* REALLIST **Description** The binomial distribution is typically used to predict the number of failures (or defective items or some type of event) in a total of ``n`` independent tests or trials, where each trial has the probability ``p`` of failing or being defective. Each particular test can be considered as a Bernoulli trial.