"Bayesian statistics is an approach to data analysis and parameter estimation based on Bayes’ theorem. Unique for Bayesian statistics is that all observed and unobserved parameters in a statistical model are given a joint probability distribution, termed the prior and data distributions."
Source: Van de Shoot, Rens; Depaoli, Sarah; King, Ruth; Kramer, Bianca; et al (2021). Bayesian statistics and modelling. Nature Reviews Methods Primers. Volume 1. Article 1. Online: https://doi.org/10.1038/s43586-020-00001-2