• In probability theory, the conditional expectation, conditional expected value, or conditional mean of a random variable is its expected value evaluated...
    34 KB (6,283 words) - 19:12, 23 March 2025
  • varies around its conditional mean E ⁡ [ Y ∣ X ] . {\displaystyle \operatorname {E} [Y\mid X].} Taking the expectation of this conditional variance across...
    11 KB (1,741 words) - 02:29, 13 April 2025
  • of total expectation, the law of iterated expectations (LIE), Adam's law, the tower rule, and the smoothing property of conditional expectation, among other...
    8 KB (1,477 words) - 14:12, 10 April 2025
  • Thumbnail for Log-normal distribution
    f_{X}(x\mid X>k)\,dx.} Alternatively, by using the definition of conditional expectation, it can be written as g ( k ) = E ⁡ [ X ∣ X > k ] Pr ( X > k )...
    90 KB (12,551 words) - 04:27, 2 May 2025
  • {\mathcal {G}})\;} An expectation of a random variable with respect to a regular conditional probability is equal to its conditional expectation. Consider the...
    13 KB (2,150 words) - 21:56, 13 February 2025
  • quantity used in place of the true conditional probability (or conditional expectation) underlying the proof. Raghavan gives this description: We first...
    21 KB (3,157 words) - 16:49, 21 February 2025
  • Thumbnail for Expected value
    the expected value (also called expectation, expectancy, expectation operator, mathematical expectation, mean, expectation value, or first moment) is a generalization...
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  • Thumbnail for Multivariate normal distribution
    (X_{1}\mid X_{2}=x_{2})=1-\rho ^{2};} thus the conditional variance does not depend on x2. The conditional expectation of X1 given that X2 is smaller/bigger than...
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  • X ) {\displaystyle \operatorname {E} (Y\mid X)} stands for the conditional expectation of Y given X, which we may recall, is a random variable itself...
    6 KB (1,099 words) - 10:03, 4 June 2024
  • tail value at risk (TVaR), also known as tail conditional expectation (TCE) or conditional tail expectation (CTE), is a risk measure associated with the...
    23 KB (4,680 words) - 04:23, 31 October 2024
  • Thumbnail for Regression analysis
    linear regression), this allows the researcher to estimate the conditional expectation (or population average value) of the dependent variable when the...
    38 KB (5,343 words) - 18:41, 23 April 2025
  • Thumbnail for Martingale (probability theory)
    e., a stochastic process) for which, at a particular time, the conditional expectation of the next value in the sequence is equal to the present value...
    23 KB (3,442 words) - 20:17, 26 March 2025
  • that is common knowledge at time t (this is often subscripted below the expectation operator); then the expected value of the realisation of X, j time-steps...
    5 KB (938 words) - 17:43, 21 September 2022
  • Thumbnail for Expectation–maximization algorithm
    the imputed complete data". Expectation conditional maximization (ECM) replaces each M step with a sequence of conditional maximization (CM) steps in which...
    50 KB (7,512 words) - 10:00, 10 April 2025
  • is the conditional density of Y given X. This result can be extended to measure theoretical conditional expectation using the regular conditional probability...
    8 KB (1,438 words) - 21:14, 3 November 2024
  • derivative identity can be established between the conditional cumulant and the conditional expectation. For example, suppose that Y = X + Z where Z is standard...
    50 KB (8,877 words) - 21:10, 14 April 2025
  • Thumbnail for Conditional independence
    K\Rightarrow Y\perp \!\!\!\perp X\mid K} . Graphoid Conditional dependence de Finetti's theorem Conditional expectation To see that this is the case, one needs to...
    19 KB (3,481 words) - 16:31, 25 April 2025
  • In mathematics, non-commutative conditional expectation is a generalization of the notion of conditional expectation in classical probability. The space...
    3 KB (490 words) - 17:55, 23 January 2022
  • kernel regression is a non-parametric technique to estimate the conditional expectation of a random variable. The objective is to find a non-linear relation...
    9 KB (1,261 words) - 07:54, 4 June 2024
  • infinity. The conditional expectation of the limit inferior might not be well defined on this set, because the conditional expectation of the negative...
    28 KB (5,120 words) - 05:53, 25 April 2025
  • distribution then the expected shortfall is equivalent to the tail conditional expectation defined by TCE α ⁡ ( X ) = E [ − X ∣ X ≤ − VaR α ⁡ ( X ) ] {\displaystyle...
    34 KB (6,445 words) - 22:03, 11 January 2025
  • the conditional probability of failure is at most the conditional expectation of F {\displaystyle F} . Next we calculate the conditional expectation of...
    24 KB (4,052 words) - 03:12, 2 December 2023
  • Conditioning (probability) (category Conditional probability)
    irrespective of other possible values of X. Given that X = 1, the conditional expectation of the random variable Y is E ( Y | X = 1 ) = 3 10 {\displaystyle...
    35 KB (6,865 words) - 13:20, 22 April 2025
  • that if g(X) is any kind of estimator of a parameter θ, then the conditional expectation of g(X) given T(X), where T is a sufficient statistic, is typically...
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  • Thumbnail for Correlation
    several specific types of mathematical relationship between the conditional expectation of one variable given the other is not constant as the conditioning...
    39 KB (5,350 words) - 12:51, 24 March 2025
  • Thumbnail for Variance
    [X\mid Y])+\operatorname {Var} (\operatorname {E} [X\mid Y]).} The conditional expectation E ⁡ ( X ∣ Y ) {\displaystyle \operatorname {E} (X\mid Y)} of X...
    61 KB (10,215 words) - 11:05, 7 May 2025
  • Thumbnail for English conditional sentences
    headings zero conditional, first conditional (or conditional I), second conditional (or conditional II), third conditional (or conditional III) and mixed...
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  • zero–one law Conditional probability Conditioning (probability) Conditional expectation Conditional probability distribution Regular conditional probability...
    8 KB (556 words) - 00:09, 23 June 2024
  • observation (the so-called selection equation) together with the conditional expectation of the dependent variable (the so-called outcome equation). The...
    14 KB (1,569 words) - 08:35, 12 December 2023
  • Conditional expectation – Expected value of a random variable given that certain conditions are known to occur Borel–Kolmogorov paradox – Conditional...
    8 KB (1,550 words) - 06:32, 14 April 2025