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Definition of Probability


  1. The quality or state of being probable; appearance of reality or truth; reasonable ground of presumption; likelihood.
  2. That which is or appears probable; anything that has the appearance of reality or truth.
  3. Likelihood of the occurrence of any event in the doctrine of chances, or the ratio of the number of favorable chances to the whole number of chances, favorable and unfavorable. See 1st Chance, n., 5.

Probability Quotations

The probability that we may fail in the struggle ought not to deter us from the support of a cause we believe to be just.
Abraham Lincoln

The 50-50-90 rule: Anytime you have a 50-50 chance of getting something right, there's a 90% probability you'll get it wrong.
Andy Rooney

The probability of apocalypse soon cannot be realistically estimated, but it is surely too high for any sane person to contemplate with equanimity.
Noam Chomsky

We can say with certainty - or 90% probability - that the new industries that are about to be born will have nothing to do with information.
Peter Drucker

We think that life develops spontaneously on Earth, so it must be possible for life to develop on suitable planets elsewhere in the universe. But we don't know the probability that a planet develops life.
Stephen Hawking
More "Probability" Quotations

Probability Translations

probability in German is Wahrscheinlichkeit, wahrscheinlich
probability in Italian is verosimiglianza
probability in Spanish is probabilidad, apariencia
probability in Swedish is sannolikhet

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