Consider event A = “dice shows 2”

Frequentist definition of probability

- probability of event A is the relative frequency of this event “in the long run” –> P(A) = 1/6

Bayesian definition of probability

- includes expert knowledge as well as experimental data to compute probabilities
- the expert knowledge is represented by some (subjective) prior probability distribution
- the data is incorporated in a likelihood function
- the product of the prior and the likelihood, normalized, results in a posterior probability distribution that incorporates all the information known to date

public/bayesian_vs._frequentist_approach_to_define_probabilities.txt · Last modified: 2014/01/02 15:06 (external edit) · []