Notation for joint probability takes the form:
Joint probability is a measure of two events happening at the same time, and can only be applied to situations where more than one observation can be occurred at the same time.
For example, a joint probability can not be calculated when tossing a coin on the same flip. However, the joint probability can be calculated on the probability of rolling a 2 and a 5 using two different dice.
Investment dictionary. Academic. 2012.
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