# Event Probability Value

(Redirected from Occurrence Likelihood)

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A event probability value is a unit interval real number that represents the Occurrence Likelihood/likelihood of some specific stochastic event occurrence (from some sample space)

**AKA:**Occurrence Likelihood, Probability Number.**Context:**- It can be the output of a Probability Function.
- It can range from being Rare Event (probability close to 0) and Common Event (probability close to 1).
- It can be a member of a probability value set, such as a Probability Distribution.
- It can be associated with a Random Experiment Event.
- …

**Example(s):**- a Success Probability.
^{1}/_{6}is the probability that a Dice-Roll Experiment will result in the number 5.^{1}/_{4}is the probability that a Two-Dice Experiment will result in two Odd Numbers.- a Conditional Probability Value, associated with a Conditional Probability Function and Prior Knowledge of an Event Member.
- a Marginal Probability Value, associated with a Conditional Probability Function and NO Prior Knowledge of an Event Member.
- a Failure Probability Value.
- …

**Counter-Example(s):**- a Likelihood Score/Confidence Score.
- a Prediction Confidence Score, which is empirically determined.

**See:**Probability Distribution, Joint Probability Table, Random Experiment, Random Variable, Probability Distribution Family.