the probability of one event, A, occurring given that another, B, is already known to have occurred: written P(A|B) and equal to P(A and B)|P(B)
conditional probability in American English
noun
Statistics & Math
the probability that an event will occur under the condition that another event occurs first: equal to the probabilitythat both will occur divided by the probability that the first will occur
Word origin
[1960–65]This word is first recorded in the period 1960–65. Other words that entered Englishat around the same time include: bicycle kick, deinstitutionalize, parvovirus, power play, proxemics
Examples of 'conditional probability' in a sentence
conditional probability
Conditional probability, vital for understanding risk, is introduced.
Times, Sunday Times (2014)
What you want to know when you are in the stands is a conditional probability.
Times, Sunday Times (2009)
Less than 10% a year leave school with formal training in basics such as exponential functions, normal distributions (the 'bell curve') and conditional probability.