An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 11 Search : probability
additive law of probability
  قانون ِ بردایشی ِ شوانایی   
qânun-e bardâyeši-ye šavânâyi

Fr.: loi additive de probabilité   

If E1, E2, ..., En are n → mutually exclusive events, then the probability of occurrence of at least one of them is the sum of their individual probabilities: P(E1 + E2 + ... + En) = P(E1) + P(E2) + ... + P(En).

additive; → law; → probability.

conditional probability
  شوانایی ِ بوتاری   
šavânâyi-ye butâri

Fr.: probabilité conditionnelle   

Of an event B in relationship to an event A, the probability that event B occurs given that event A has already occurred. The notation for conditional probability is P(B|A), read as the probability of B given A: P(B|A) = P(A ∩ B)/P(A). → Bayes' theorem.

conditional; → probability.

conservation of probability
  پایش ِ شوانایی، پایندگی ِ ~   
pâyeš-e šavânâyi, pâyandegi-ye ~

Fr.: conservation de probabilité   

A principle according to which the sum of probabilities of all possible states that might come out of an initial state equals the probability of the initial state.

conservation; → probability.

objective probability
  شوانایی ِ بر‌آختی   
šavânâi-ye barâxti

Fr.: probabilité objective   

A probability determined by the long-term frequency of an event; in contrast to subjective probability.

objective; → probability.

probability
  شوانایی   
šavânâyi

Fr.: probabilité   

1) General: The quality or fact of being probable. A strong → likelihood or chance of something.
2) Statistics: The branch of → mathematics that studies the possible outcomes of given events and their relative distributions. → probability theory.

From → probable + → -ity.

probability curve
  خم ِ شوانایی   
xam-e šavânâyi

Fr.: courbe de probabilité   

A curve that describes the distribution of probability over the values of a random variable.

probability; → curve.

probability density function
  کریای ِ چگالی ِ شوانایی   
karyâ-ye cagâli-ye šavânâyi

Fr.: fonction de densité de probabilité   

A mathematical function whose integral over any interval gives the probability that a continuous → random variable has values in this interval. Also known as → density function, frequency function, → probability function.

probability; → density; → function.

probability distribution
  واباژش ِ شوانایی   
vâbâžeš-e šavânâyi

Fr.: distribution de probabilité   

The function that describes the range of possible values that a random variable can attain and the probability that the value of the random variable is within any (measurable) subset of that range.

probability; → distribution.

probability function
  کریای ِ شوانایی   
karyâ-ye šavânâyi

Fr.: fonction de probabilité   

A function that represents a probability distribution in terms of integrals. Also called probability density function or density function.

probability; → function.

probability theory
  نگره‌ی ِ شوانایی   
negare-ye šavânâyi

Fr.: théorie des probabilités   

A branch of → mathematics with its own axioms and methods, which is based on the concept of → randomness and is concerned with the possible outcome of given → events and their relative → likelihoods and → distributions.

probability; → theory.

transition probability
  شوانایی ِ گذرشی   
šavânâyi-ye gozareši

Fr.: probabilité de transition   

The probability that a quantum-mechanical system will make a transition from a given initial state to a given final state.

transition; → probability.