A probability as assessed before making reference to certain relevant observations, especially subjectively or on the assumption that all possible outcomes be given the same probability. Compare with posterior probability.
- The probability is either a prior probability or a conditional probability.
- The resultant posterior probability then becomes a prior probability for the second drawing, the result of which is used to calculate a further posterior probability.
- Her lawyers demonstrated that the test did not take proper account of the prior probability and thus made a tacit initial assumption of guilt.
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Syllabification: pri·or prob·a·bil·i·ty
Definition of prior probability in:
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