Results 21 to 30 of about 128,596 (295)

Pseudo-Ranks: How to Calculate Them Efficiently in R

open access: yesJournal of Statistical Software, 2020
Many popular nonparametric inferential methods are based on ranks. Among the most commonly used and most famous tests are for example the Wilcoxon-Mann-Whitney test for two independent samples, and the Kruskal-Wallis test for multiple independent groups.
Martin Happ   +3 more
doaj   +1 more source

A Study of Seven Asymmetric Kernels for the Estimation of Cumulative Distribution Functions

open access: yesMathematics, 2021
In this paper, we complement a study recently conducted in a paper of H.A. Mombeni, B. Masouri and M.R. Akhoond by introducing five new asymmetric kernel c.d.f.
Pierre Lafaye de Micheaux   +1 more
doaj   +1 more source

Relationship between sonorheometry parameters and laboratory values in a critical care setting in Italy: a retrospective cohort study [PDF]

open access: yesJournal of Trauma and Injury, 2023
Purpose This preliminary retrospective cohort study analyzed the relationship between the parameters provided by sonorheometry device Quantra and the coagulation values obtained from standard venous blood samples in patients admitted in intensive care ...
Antonio Romanelli   +4 more
doaj   +1 more source

A nonparametric test of exogeneity [PDF]

open access: yes, 2004
This paper is concerned with inference about a function g that is identified by a conditional moment restriction involving instrumental variables. The function is nonparametric. It satisfies mild regularity conditions but is otherwise unknown. The paper
Richard Blundell   +5 more
core   +1 more source

NaRnEA: An Information Theoretic Framework for Gene Set Analysis

open access: yesEntropy, 2023
Gene sets are being increasingly leveraged to make high-level biological inferences from transcriptomic data; however, existing gene set analysis methods rely on overly conservative, heuristic approaches for quantifying the statistical significance of ...
Aaron T. Griffin   +3 more
doaj   +1 more source

Nonparametric Statistical Methods

open access: yes, 2010
Nonparametric methods are appropriate when certain assumptions about distributions that common parametric methods make are questionable. In this entry, we review nonparametric statistical tests based on exact or simulated sampling distributions. We also discuss methods for nonparametric data exploration and nonparametric regression and we explain ...
Sijtsma, K., Emons, W.H.M.
openaire   +3 more sources

Nonparametric stability methods for interpreting genotype by environment interaction of bread wheat genotypes (Triticum aestivum L.)

open access: yesGenetics and Molecular Biology, 2008
Evaluation of performance stability and high yield is essential for yield trials conducted in different environments. We determined the stability of 10 bread wheat (Triticum aestivum L.) genotypes (5 cultivars and 5 advanced lines) using nonparametric ...
Mevlut Akcura, Yuksel Kaya
doaj   +1 more source

Change-Point Tests Based on Integrated Empirical Distribution Functions [PDF]

open access: yesThe Egyptian Statistical Journal, 2004
Three new nonparametric change-point test statistics, based on the integrated empirical function (IEF) are introduced. Properties and distributions of these test statistics are also discussed.
Abd-Elnasser Rabou
doaj   +1 more source

Nonparametric tests of conditional treatment effects [PDF]

open access: yes, 2009
We develop a general class of nonparametric tests for treatment effects conditional on covariates. We consider a wide spectrum of null and alternative hypotheses regarding conditional treatment effects, including (i) the null hypothesis of the ...
Whang, Yoon-Jae   +5 more
core   +1 more source

Asymptotically Sufficient Statistics in Nonparametric Regression Experiments with Correlated Noise

open access: yesJournal of Probability and Statistics, 2009
We find asymptotically sufficient statistics that could help simplify inference in nonparametric regression problems with correlated errors. These statistics are derived from a wavelet decomposition that is used to whiten the noise process and to ...
Andrew V. Carter
doaj   +1 more source

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