Probability measure: Difference between revisions
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Probability measure
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::<math> \mu\Bigl(\bigcup_{i \in I} E_i\Bigr) = \sum_{i \in I} \mu(E_i).</math>
For example, given three elements 1, 2 and
3with
3 with
probabilities 1/4, 1/4 and 1/2, the value assigned to {1, 3} is 1/4 + 1/2 = 3/4, as in the diagram on the right.
The [[conditional probability]] based on intersection of events defined as:
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