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April 25th, 2014, 01:38 PM  #1 
Newbie Joined: Apr 2014 From: montreal Posts: 1 Thanks: 0  Markov Chains
Hey guys, I just have a quick question regarding markov chains, I have always wondered how come we are allowed to add probabilities without subtracting their intersection. For example I know using the matrix we just multiply and add, but wondered due to the main rules of probability that we have to remove the intersection when calculating a union. Thanks, Wassem 
April 26th, 2014, 12:40 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,763 Thanks: 697 
Probabilities add for disjoint events. Discrete Markov chains  each step there are several possible (disjoint!) outcomes.


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chains, markov, probability, probability or statistics, stats 
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