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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

On the relationship side, if you teach people to respond actively and constructively when someone they care about has a victory, it increases love and friendship and decreases the probability of depression.
Martin Seligman

There may be aliens in our Milky Way galaxy, and there are billions of other galaxies. The probability is almost certain that there is life somewhere in space.
Buzz Aldrin

Obviously, things can get derailed, particularly if, which looks more and more likely, you get a blow-up between Israel and Iran. I think that's a very real probability now. But barring some real blow-up, the U.S. economy will grow, after a slow first quarter, about 3, 3.5 percent this year, far better than it was in 2011.
Steve Forbes

Psychology helps to measure the probability that an aim is attainable.
Edward Thorndike

If we have an atom that is in an excited state and so is going to emit a photon, we cannot say when it will emit the photon. It has a certain amplitude to emit the photon at any time, and we can predict only a probability for emission; we cannot predict the future exactly.
Richard P. Feynman
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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