Difference between revisions of "Basic relationships in probability"

Revision as of 19:18, 27 August 2020

Basic relationships in probability

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-* [[Mutually exclusive events|Mutually exclusive events]]
+Basic relationships in probability
-* [[Non-mutually exclusive events|Non-mutually exclusive events]]
-* [[Independent events|Independent events]]
-* [[Dependent events|Dependent events]]
-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:
-{{{
-P(A and B) = P(A) X  P(B | 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|M7-Quantitative Decision Methods-S2 - Probability and decision trees]]
 [[Category:mbi]]