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Probability |
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Definition
A: event
P: probability
0 ≤ P(A) ≤ 1
Ac: complement of A;
~A
P(Ac)
= 1 – P(A)
If A, B are disjoint,
P(A or B) =
P(A) + P(B)
If A, B are independent,
P(A and B) =
P(A)P(B)
P(A or B) = P(A) +
P(B) – P(A and B)
P(A and B) =
P(A)P(B/A)
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Conditional Probability
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Bayer's Rule
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A, B are independent if
P(B/A) = P(B)
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