Difference between revisions of "Basic relationships in probability"
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Latest revision as of 19:53, 27 August 2020
If events A and B are mutually exclusive then: {{{ P(A or B) = P(A) + P(B) }}}
If events A and B are non mutually exclusive then: {{{ P(A or B) = P(A) + P(B) - P(A and B) }}}
If events A and B are independent then: {{{ P(A and B) = P(A) X P(B) }}}
If events A and B are dependent then:
A)
Where P(B | A) is the probability that B occurs given that A already happened.
Part of M7-Quantitative Decision Methods-S2 - Probability and decision trees
