To calculate the probability of an event: Find the number of elements in the Venn diagram, this is n (ξ). P (A) = n (A) ÷ n (ξ) The answer may be written as a fraction, decimal or percentage.

Prior probability, in Bayesian statistical inference, is the probability of an event based on established knowledge, before empirical data is collected.

Calculate probabilities of simple and compound events. Example: What is the probability of rolling a six with one die? (simple event) ...

How likely you think something is to happen depends on what you already believe about the circumstances. That is the simple ...

When scientists spot an asteroid whose trajectory might take it close to Earth, they monitor it frequently and calculate the probability that it might collide with our planet.