Uploaded December 2012 | Updated September 2026, 44 minutes ago
An introduction to the negative binomial distribution, a common discrete probability distribution. In this video I define the negative binomial distribution to be the distribution of the number of *trials* needed to obtain r successes in repeated independent Bernoulli trials. Different sources define it in different ways (the distribution of the number of *failures* before obtaining r successes, for example.)
An introduction to the negative binomial distribution, a common discrete probability distribution. In this video I define the negative binomial distribution to be the distribution of the number of *trials* needed to obtain r successes in repeated independent Bernoulli trials. Different sources define it in different ways (the distribution of the number of *failures* before obtaining r successes, for example.)










