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Testing for association or dependence between pairs of random variables is a fundamental problem in statistics. In some applications, data are subject to selection bias that causes dependence between observations even when it is absent from…

统计方法学 · 统计学 2020-10-13 Yaniv Tenzer , Micha Mandel , Or Zuk

This paper utilizes the modified signed log-likelihood ratio method for the problem of inference about the common coefficient of variation in several independent normal populations. This method is applicable for both the problem of…

统计计算 · 统计学 2017-07-14 Mohmammad Reza Kazemi , Ali Akbar Jafari

Randomization tests have gained popularity for causal inference under network interference because they are finite-sample valid with minimal assumptions. However, existing procedures are limited as they primarily focus on the existence of…

统计方法学 · 统计学 2025-02-28 Shunzhuang Huang , Xinran Li , Panos Toulis

Sample size determination for cluster randomised trials (CRTs) is challenging as it requires robust estimation of the intra-cluster correlation coefficient (ICC). Typically, the sample size is chosen to provide a certain level of power to…

应用统计 · 统计学 2023-08-23 S. Faye Williamson , Svetlana V. Tishkovskaya , Kevin J. Wilson

It was recently noticed that high-energy scattering processes in QCD have a stochastic nature. An event-by-event scattering amplitude is characterised by a saturation scale which is a random variable. The statistical ensemble of saturation…

高能物理 - 唯象学 · 物理学 2008-11-26 C. Marquet , G. Soyez , Bo-Wen Xiao

Importance sampling (IS) is valuable in reducing the variance of Monte Carlo sampling for many areas, including finance, rare event simulation, and Bayesian inference. It is natural and obvious to combine quasi-Monte Carlo (QMC) methods…

数值分析 · 数学 2022-07-21 Zhijian He , Zhan Zheng , Xiaoqun Wang

This paper introduces a new method for testing the statistical significance of estimated parameters in predictive regressions. The approach features a new family of test statistics that are robust to the degree of persistence of the…

计量经济学 · 经济学 2025-02-04 Jean-Yves Pitarakis

The distribution function of a random distance in three dimensions is given and some new three-dimensional d2-tests of randomness are suggested. We show that our test statistics are not correlated with the usual test statistics and are…

应用统计 · 统计学 2014-02-24 Sergii Koliada

Statistical significance testing is widely accepted as a means to assess how well a difference in effectiveness reflects an actual difference between systems, as opposed to random noise because of the selection of topics. According to…

信息检索 · 计算机科学 2019-06-07 Julián Urbano , Harlley Lima , Alan Hanjalic

We consider the problem of testing whether pairs of univariate random variables are associated. Few tests of independence exist that are consistent against all dependent alternatives and are distribution free. We propose novel tests that…

统计方法学 · 统计学 2014-12-09 Ruth Heller , Yair Heller , Shachar Kaufman , Malka Gorfine

Many experiments can be interpreted in terms of random processes operating according to some internal protocols. When experiments are costly or cannot be repeated only one or a few finite samples are available. In this paper we study data…

数据分析、统计与概率 · 物理学 2016-02-02 Marian Kupczynski , Hans De Raedt

We consider goodness-of-fit tests for uniformity of a multinomial distribution by means of tests based on a class of symmetric statistics, defined as the sum of some function of cell-frequencies. We are dealing with an asymptotic regime,…

统计理论 · 数学 2022-11-03 Sherzod M Mirakhmedov

Sequential likelihood ratio testing is found to be most powerful in sequential studies with early stopping rules when grouped data come from the one-parameter exponential family. First, to obtain this elusive result, the probability measure…

统计方法学 · 统计学 2021-01-28 Sergey Tarima , Nancy Flournoy

The quantum statistical parton distributions approach proposed more than one decade ago is revisited by considering a larger set of recent and accurate Deep Inelastic Scattering experimental results. It enables us to improve the description…

高能物理 - 唯象学 · 物理学 2015-10-22 Jacques Soffer , Claude Bourrely

When a scientist performs an experiment they normally acquire a set of measurements and are expected to demonstrate that their results are "statistically significant" thus confirming whatever hypothesis they are testing. The main method for…

其他统计学 · 统计学 2011-09-30 Jacob Levman

This paper deals with the issue of testing hypothesis in symmetric and log-symmetric linear regression models in small and moderate-sized samples. We focus on four tests, namely the Wald, likelihood ratio, score, and gradient tests. These…

统计方法学 · 统计学 2016-02-03 Francisco M. C. Medeiros , Silvia L. P. Ferrari

It is generally believed that more observations provide more information. However, we observe that in the independence test for rare events, the power of the test is, surprisingly, determined by the number of rare events rather than the…

统计方法学 · 统计学 2025-06-17 Danyang Huang , Liyuan Wang , Liping Zhu

The question of testing for equality in distribution between two linear models, each consisting of sums of distinct discrete independent random variables with unequal numbers of observations, has emerged from the biological research. In…

统计理论 · 数学 2020-09-01 Giulio Prevedello , Ken R. Duffy

In this paper, we consider testing the homogeneity of risk differences in independent binomial distributions especially when data are sparse. We point out some drawback of existing tests in either controlling a nominal size or obtaining…

统计方法学 · 统计学 2018-05-31 Junyong Park , Iris Ivy Gauran

This study aims to evaluate the performance of power in the likelihood ratio test for changepoint detection by bootstrap sampling, and proposes a hypothesis test based on bootstrapped confidence interval lengths. Assuming i.i.d normally…

统计方法学 · 统计学 2020-11-10 Ryan Chen , Javier Cabrera