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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
    The probability is a number between 0 and 1; the larger the probability, the more likely the desired outcome is to occur For example, tossing a coin twice will yield "head-head", "head-tail", "tail-head", and "tail-tail" outcomes
  • 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)
  • Basic Concepts of Probability - GeeksforGeeks
    The probability of an event E, denoted by P (E), is a number between 0 and 1 that represents the likelihood of E occurring If P (E) = 0, the event E is impossible
  • 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: the basics (article) | Khan Academy
    Explore what probability means and why it's useful Probability is simply how likely something is to happen Whenever we’re unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are The analysis of events governed by probability is called statistics
  • 7. 5: Basic Concepts of Probability - Mathematics LibreTexts
    We do that by assigning a number to each event (E) called the probability of that event (P (E)) The probability of an event is a number between 0 and 1 (inclusive) If the probability of an event is 0, then the event is impossible On the other hand, an event with probability 1 is certain to occur
  • Probability: The Basics EXPLAINED with Examples - YouTube
    In this video, we explain what probability is and the 3 rules that all of probability follows Then we walk through an easy to understand example to solidify the concept
  • Introduction to Probability – Mathematics - Open Oregon Educational . . .
    In this chapter, you will: Write the sample space for theoretical probability situations; Identify certain and impossible events; Calculate the theoretical probability of a complement; Determine the difference between experimental and theoretical probability; And explain the Law of Large Numbers
  • What is Probability? Definition and Examples - Basic-mathematics. com
    We will answer these questions here along with some useful properties of probability Probability is a numerical measure of the likelihood that a specific event will occur
  • Statistics Study Guide: Probability, Normal Sampling | Notes - Pearson
    This statistics study guide covers probability distributions, normal distribution, sampling, and review exercises for mastering key statistical concepts





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