family of scaled inverse chi-squared distributions is linked to the inverse-chi-squared distribution and to the chi-squared distribution: If X ∼ ψ inv-...
12 KB (2,163 words) - 18:40, 9 March 2025
and statistics, the inverse-chi-squared distribution (or inverted-chi-square distribution) is a continuous probability distribution of a positive-valued...
5 KB (394 words) - 21:42, 12 October 2024
Chi distribution Scaled inverse chi-squared distribution Gamma distribution Generalized chi-squared distribution Noncentral chi-squared distribution Pearson's...
45 KB (6,817 words) - 10:25, 19 March 2025
parametrize the inverse gamma distribution differently, as a scaled inverse chi-squared distribution. The inverse gamma distribution's probability density...
11 KB (1,632 words) - 09:32, 12 June 2025
negative. Other inverse distributions include inverse-chi-squared distribution inverse-gamma distribution inverse-Wishart distribution inverse matrix gamma...
12 KB (1,718 words) - 22:17, 18 March 2025
Gamma distribution, and it is used in goodness-of-fit tests in statistics. The inverse-chi-squared distribution The noncentral chi-squared distribution The...
22 KB (2,620 words) - 07:59, 2 May 2025
and statistics, the generalized chi-squared distribution (or generalized chi-square distribution) is the distribution of a quadratic function of a multinormal...
16 KB (2,076 words) - 16:17, 10 June 2025
\tau ^{2}~.} The scaled-inverse-chi-squared distribution is exactly the same distribution as the inverse gamma distribution, but with a different parameterization...
55 KB (6,423 words) - 06:46, 1 June 2025
conjugate prior of the variance has an inverse gamma distribution or a scaled inverse chi-squared distribution. The two are equivalent except for having...
151 KB (22,720 words) - 14:33, 14 June 2025
characteristics related to the chi-squared distribution. Let random variable Y be defined as Y = X2 where X has normal distribution with mean 0 and variance...
7 KB (1,645 words) - 14:44, 4 January 2024
t-distribution was defined in terms of a scaled-inverse-chi-squared distribution placed on the variance. However, it is more common to use an inverse gamma...
16 KB (2,510 words) - 17:47, 24 February 2024
{\text{?}},{\text{?}},{\text{?}},{\text{?}})\,} normal-inverse chi-squared distribution G H ( ? , ? , ? , ? , ? ) {\displaystyle \mathrm {GH} ({\text{...
7 KB (658 words) - 16:13, 10 June 2025
{\displaystyle X\,\sim \,\operatorname {Scale-inv-\chi ^{2}} (1,c)} (scaled-inverse-chi-squared distribution). If X ∼ Levy ( μ , c ) {\displaystyle X\sim...
10 KB (1,371 words) - 22:22, 14 April 2024
inequality Chernoff face Chernoff's distribution Chernoff's inequality Chi distribution Chi-squared distribution Chi-squared test Chinese restaurant process...
87 KB (8,280 words) - 23:04, 12 March 2025
distribution (type III) Gamma distribution (type III) F-distribution (type VI) Inverse-chi-squared distribution (type V) Inverse-gamma distribution (type...
23 KB (4,168 words) - 19:49, 8 June 2025
p ) {\displaystyle \chi _{k}^{2}(p)} is the quantile function for probability p {\displaystyle p} of the chi-squared distribution with k {\displaystyle...
65 KB (9,594 words) - 15:19, 3 May 2025
distribution, Erlang distribution, and chi-squared distribution are special cases of the gamma distribution. There are two equivalent parameterizations...
66 KB (9,100 words) - 05:31, 2 June 2025
theory, the inverse Gaussian distribution (also known as the Wald distribution) is a two-parameter family of continuous probability distributions with support...
28 KB (3,168 words) - 15:15, 25 May 2025
chi-squared test) Student's t distribution, the distribution of the ratio of a standard normal variable and the square root of a scaled chi squared variable;...
48 KB (6,688 words) - 17:43, 6 May 2025
In statistics, the mean squared error (MSE) or mean squared deviation (MSD) of an estimator (of a procedure for estimating an unobserved quantity) measures...
24 KB (3,861 words) - 12:45, 11 May 2025
T-squared distribution (T2), proposed by Harold Hotelling, is a multivariate probability distribution that is tightly related to the F-distribution and...
18 KB (1,980 words) - 21:40, 18 September 2024
^{2}}{\nu }},} where the chi-squared is a weighted sum of squared deviations: χ 2 = ∑ i ( O i − C i ) 2 σ i 2 {\displaystyle \chi ^{2}=\sum _{i}{\frac...
12 KB (1,867 words) - 19:00, 25 November 2024
gamma distribution, inverse-chi-squared distribution, the inverse-gamma distribution and the scaled inverse chi-squared distribution. The following values...
29 KB (4,425 words) - 23:47, 7 February 2025
In statistics, the inverse Wishart distribution, also called the inverted Wishart distribution, is a probability distribution defined on real-valued positive-definite...
20 KB (3,492 words) - 15:44, 5 June 2025
calculation gives a scaled inverse chi-squared distribution with n − 1 degrees of freedom for the posterior probability distribution of σ2. The expected loss...
34 KB (5,367 words) - 15:44, 15 April 2025
G-test (section Relation to the chi-squared test)
approximation to the theoretical chi-squared distribution for the G-test is better than for the Pearson's chi-squared test. In cases where O i > 2 ⋅...
16 KB (2,506 words) - 18:23, 2 April 2025
2(m-p+1)}.} Chi-squared distribution Dirichlet distribution F-distribution Gamma distribution Hotelling's T-squared distribution Student's t-distribution Wishart...
4 KB (635 words) - 18:11, 30 November 2024
Rayleigh distribution is a continuous probability distribution for nonnegative-valued random variables. Up to rescaling, it coincides with the chi distribution...
16 KB (2,251 words) - 04:19, 13 February 2025
Wishart distribution. Chi-squared distribution Complex Wishart distribution F-distribution Gamma distribution Hotelling's T-squared distribution Inverse-Wishart...
27 KB (4,194 words) - 18:43, 6 April 2025
by an independent chi-distributed random variable, while the F-distribution originates from the ratio of two independent chi-squared distributed random...
53 KB (10,468 words) - 23:37, 25 May 2025