P(A1|A2) is bad notation on Steven's part. It meant P(A1 or A2)

送交者: HHS 于 2010-04-21, 14:03:54:

回答: P(A1|A2) = P(A1) + P(A2) - P(A1 and A2) 由 HHS 于 2010-04-21, 13:46:59:

P(A1|A2) is commonly referred to conditional probability pf P(A1) given A2 occuring

yeah, yor're right. I should use or. - steven (118 bytes) 2010-04-21, 16:52:22 (433880)