Beta negative binomial distribution

The Beta-negative binomial distribution is a mixture of two distributions: the Beta distribution and the negative binomial distribution. It is often used in scenarios where one wishes to model overdispersion in count data, which is a common issue in fields such as ecology, medicine, and social sciences. ### Components: 1. **Negative Binomial Distribution**: - The negative binomial distribution models the number of failures before a specified number of successes occurs in a series of Bernoulli trials.