Results 1 to 10 of about 142 (132)

Edgeworth Expansions and Smoothness

open access: yesAnnals of Probability, 1982
We give a necessary and sufficient condition for the distribution function of $n^{-1/2} \sum^n_{i=1} X_i$, where the $X_i$ are independently identically distributed with $EX_1 = 0, EX^2_1 = 1$ and $E|X_1|^{k+3} < \infty$, to possess an Edgeworth expansion to $k$ terms. The condition is not practicable but clarifies the relation between the existence of
Bickel, P. J., Robinson, J.
exaly   +4 more sources

On Edgeworth Expansions in the Mixture Cases

open access: yesAnnals of Statistics, 1989
Let X be a random vector with at least one marginal having a lattice distribution. For a wide class of statistics which can be written as a function of means of independent copies of X, it is established in this article that the one-term Edgeworth expansion is typically the same as the usual one-term expansion in the pure nonlattice case.
Babu, G. J., Singh, K.
exaly   +4 more sources

Edgeworth Expansions in Nonparametric Statistics

open access: yesAnnals of Statistics, 1974
This is a survey of recent work on Edgeworth expansions for $(M)$ estimates, rank tests and some other statistics arising in nonparametric models. A Berry-Esseen theorem for $U$-statistics which seems to be new is also proved.
P J Bickel
exaly   +4 more sources

On Edgeworth Expansions with Unknown Cumulants

open access: yesAnnals of Statistics, 1975
In this paper a new method of approximating one distribution by another is introduced. The method is essentially a modification of the Edgeworth technique which eliminates the necessity of knowing the cumulants of the distributions involved.
Gray, H. L.   +2 more
exaly   +4 more sources

On Edgeworth Expansions in Banach Spaces

open access: yesAnnals of Probability, 1981
In this paper we define a generalization of Edgeworth expansions for the expectation of functions of normalized sums of i.i.d. Banach space valued random vectors. These expansions are valid up to $0(n^{-(s - 2)/2})$ for functions with $3(s - 2)$ bounded Frechet derivatives and random vectors with finite $s^{th}$ absolute moment.
Friedrich Götze
exaly   +4 more sources

Chebyshev–Edgeworth-Type Approximations for Statistics Based on Samples with Random Sizes

open access: yesMathematics, 2021
Second-order Chebyshev–Edgeworth expansions are derived for various statistics from samples with random sample sizes, where the asymptotic laws are scale mixtures of the standard normal or chi-square distributions with scale mixing gamma or inverse ...
Gerd Christoph, Vladimir V. Ulyanov
doaj   +1 more source

Analysis of quasi-lattice distributions of statistics from finite population

open access: yesLietuvos Matematikos Rinkinys, 2004
Edgeworth expansions are used for approximation of quantiles, estimation of parameters, construction of confidence intervals and testing hypothesis. Paper shows how to construct  ` `  long'' Edgewort asymptotic expansions.
Jurgita Turkuvienė, Algimantas Bikelis
doaj   +3 more sources

Second Order Chebyshev–Edgeworth-Type Approximations for Statistics Based on Random Size Samples

open access: yesMathematics, 2023
This article completes our studies on the formal construction of asymptotic approximations for statistics based on a random number of observations.
Gerd Christoph, Vladimir V. Ulyanov
doaj   +1 more source

Contributions to Risk Assessment with Edgeworth–Sargan Density Expansions (I): Stability Testing

open access: yesMathematics, 2022
This paper analytically derives a stability test for the probability distribution of a random variable that follows the Edgeworth–Sargan density, also called Gram–Charlier.
Ignacio Mauleón
doaj   +1 more source

Edgeworth expansions for network moments

open access: yesThe Annals of Statistics, 2022
Network method of moments arXiv:1202.5101 is an important tool for nonparametric network inference. However, there has been little investigation on accurate descriptions of the sampling distributions of network moment statistics. In this paper, we present the first higher-order accurate approximation to the sampling CDF of a studentized network moment ...
Yuan Zhang, Dong Xia
openaire   +4 more sources

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