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probability    音标拼音: [pr,ɑbəb'ɪləti]
n. 可能性,或然率,几率,概率

可能性,或然率,几率,概率

probability
或然率


probability
机率论

probability
机率

probability
n 1: a measure of how likely it is that some event will occur; a
number expressing the ratio of favorable cases to the whole
number of cases possible; "the probability that an unbiased
coin will fall with the head up is 0.5" [synonym:
{probability}, {chance}]
2: the quality of being probable; a probable event or the most
probable event; "for a while mutiny seemed a probability";
"going by past experience there was a high probability that
the visitors were lost" [ant: {improbability},
{improbableness}]

Probability \Prob`a*bil"i*ty\, n.; pl. {Probabilities}. [L.
probabilitas: cf. F. probabilit['e].]
[1913 Webster]
1. The quality or state of being probable; appearance of
reality or truth; reasonable ground of presumption;
likelihood.
[1913 Webster]

Probability is the appearance of the agreement or
disagreement of two ideas, by the intervention of
proofs whose connection is not constant, but appears
for the most part to be so. --Locke.
[1913 Webster]

2. That which is or appears probable; anything that has the
appearance of reality or truth.
[1913 Webster]

The whole life of man is a perpetual comparison of
evidence and balancing of probabilities.
--Buckminster.
[1913 Webster]

We do not call for evidence till antecedent
probabilities fail. --J. H.
Newman.
[1913 Webster]

3. (Math.) 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.
[1913 Webster]

Syn: Likeliness; credibleness; likelihood; chance.
[1913 Webster]

187 Moby Thesaurus words for "probability":
a thing for, accidentality, actuarial calculation,
actuarial prediction, adventitiousness, affinity, aftertime,
afteryears, anticipation, apocalypse, aptitude, aptness,
bare possibility, bent, best bet, bias, break, by-and-by, cast,
casualness, certainty, chance, chances, conatus, conceivability,
conceivableness, conduciveness, confidence, contemplation,
contingency, course ahead, crystal ball, delight, destiny,
determinism, diathesis, disposition, distant future, eagerness,
even chance, eventuality, expectancy, expectation, fate,
favorable prospect, feeling for, flukiness, foreboding, forecast,
forecasting, foreshowing, foresight, foretelling, fortuitousness,
fortuity, fortune, forward look, future, future tense, futurism,
futurity, gamble, good chance, good fortune, good luck,
good opportunity, good possibility, guesswork, hap, happenstance,
happy chance, heedless hap, hereafter, hope, how they fall,
immediate future, immediate prospect, imminence, improbability,
inclination, indeterminacy, indeterminateness, law of averages,
leaning, liability, liableness, likelihood, likeliness, liking,
lot, luck, main chance, moira, near future, obligation, odds,
odds-on, odds-on chance, off chance, offing, omen, opportunity,
outlook, outside chance, outside hope, penchant, possibility,
possibleness, posteriority, potential, potentiality, prediction,
predilection, predisposition, prefiguration, prefigurement,
prefiguring, prejudice, presage, presaging, presentiment,
preshowing, presignifying, presumption, principle of indeterminacy,
problematicness, proclivity, prognosis, prognostication, project,
promise, proneness, propensity, prophecy, prophesying, prospect,
prospectus, random sample, readiness, reliance, remote possibility,
risk, run of luck, sensitivity to, serendipity, small hope,
soft spot, soothsay, speculation, sporting chance,
statistical prediction, statistical probability, sure bet,
sure thing, susceptibility, tendency, the attainable, the breaks,
the feasible, the future, the morrow, the possible,
the sweet by-and-by, theory of probability, thinkability,
thinkableness, thought, time ahead, time just ahead, time to come,
tomorrow, tropism, turn, twist, unastonishment, uncertainty,
uncertainty principle, vaticination, virtuality, warp, weakness,
well-grounded hope, what is possible, what may be, what might be,
whatever comes, willingness


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  • Probability - Wikipedia
    Probability is a branch of mathematics and statistics concerning events and numerical descriptions of how likely they are to occur The probability of an event is a number between 0 and 1; the larger the probability, the more likely an event is to occur [note 1][1][2] This number is often expressed as a percentage (%), ranging from 0% to 100%
  • Probability - Math is Fun
    How likely something is to happen Many events can't be predicted with total certainty The best we can say is how likely they are to happen, using the idea of probability When a coin is tossed, there are two possible outcomes: Also: When a single die is thrown, there are six possible outcomes: 1, 2, 3, 4, 5, 6
  • Probability Definition in Math - BYJUS
    Probability is a measure of the likelihood of an event to occur Many events cannot be predicted with total certainty We can predict only the chance of an event to occur i e , how likely they are going to happen, using it Probability can range from 0 to 1, where 0 means the event to be an impossible one and 1 indicates a certain event
  • Probability - Formula, Calculating, Find, Theorems, Examples
    Probability is all about how likely is an event to happen For a random experiment with sample space S, the probability of happening of an event A is calculated by the probability formula n(A) n(S)
  • 7. 5: Basic Concepts of Probability - Mathematics LibreTexts
    Define probability including impossible and certain events Calculate basic theoretical probabilities Calculate basic empirical probabilities Distinguish among theoretical, empirical, and subjective probability Calculate the probability of the complement of an event It all comes down to this
  • What is Probability? Definition, Types, Formula, Examples
    Probability is defined as the measure of how likely an event is to happen, usually expressed as a value between zero and one A Probability of zero indicates that the event is impossible, while a Probability of one signifies absolute certainty
  • Probability - Definition, Formula, Types, Terms, Solved Problems
    Probability is a branch of mathematics that deals with the occurrence of random events It is expressed from zero to one and predicts how likely events are to happen In general, Probability is basically the extent to which something is likely to happen





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