Results 1 to 10 of about 1,377,894 (171)

Test-statistic inflation in methylome-wide association studies [PDF]

open access: yesEpigenetics, 2020
Recent years have seen a surge of methylome-wide association studies (MWAS). We observed that many of these studies suffer from test statistic inflation that is most likely caused by commonly used quality control (QC) pipelines not going far enough to ...
Jerry Guintivano   +7 more
doaj   +2 more sources

Rediscovering a Little Known Fact about the t-test and the F-test: Algebraic, Geometric, Distributional and Graphical Considerations

open access: yesStatistica, 2023
We discuss the role that the null hypothesis should play in the construction of a test statistic used to make a decision about that hypothesis.
Jennifer A. Sinnott   +2 more
doaj   +3 more sources

Likelihood-ratio test statistic for the finite-sample case in nonlinear ordinary differential equation models. [PDF]

open access: yesPLoS Computational Biology, 2023
Likelihood ratios are frequently utilized as basis for statistical tests, for model selection criteria and for assessing parameter and prediction uncertainties, e.g. using the profile likelihood. However, translating these likelihood ratios into p-values
Christian Tönsing   +3 more
doaj   +2 more sources

Single Valued Neutrosophic Kruskal-Wallis and Mann Whitney Tests [PDF]

open access: yesNeutrosophic Sets and Systems, 2022
In this paper, Kruskal-Wallis test is extended to deal with neutrosophic data in single valued form using score, accuracy and certainty functions to calculate ranks of SVNNs, also MannWhitney test is extended to deal with same data type which makes it ...
Mahmoud Miari   +2 more
doaj   +1 more source

Polynomial Columns-Parameter Symmetry Model and its Decomposition for Square Contingency Tables

open access: yesStatistica, 2021
This study proposes a polynomial columns-parameter symmetry model for square contingency tables with the same row and column ordinal classifications. In the proposed model, the odds for all i < j that an observation will fall in row category i and column
Shuji Ando
doaj   +1 more source

T test as a parametric statistic [PDF]

open access: yesKorean Journal of Anesthesiology, 2015
In statistic tests, the probability distribution of the statistics is important. When samples are drawn from population N (µ, σ2) with a sample size of n, the distribution of the sample mean X̄ should be a normal distribution N (µ, σ2/n).
Tae Kyun Kim
doaj   +1 more source

Statistical Tests for Clonality [PDF]

open access: yesBiometrics, 2006
Summary Cancer investigators frequently conduct studies to examine tumor samples from pairs of apparently independent primary tumors with a view to determine whether they share a “clonal” origin. The genetic fingerprints of the tumors are compared using a panel of markers, often representing loss of heterozygosity (LOH) at distinct genetic loci.
Begg, Colin B.   +2 more
openaire   +2 more sources

An Evaluation of Testing Procedures for Event Study [PDF]

open access: yesتحقیقات مالی, 2013
This paper analyses efficiency of short horizon event study methodology in general and efficiency of various test statistics based on price and trading volume in the period (Iranian calendar) 1380:1389-q1 (2240 days) applying simulation method.
Mohammad hosein Ghaemi   +2 more
doaj   +1 more source

More on the Supremum Statistic to Test Multivariate Skew-Normality

open access: yesComputation, 2021
This review is about verifying and generalizing the supremum test statistic developed by Balakrishnan et al. Exhaustive simulation studies are conducted for various dimensions to determine the effect, in terms of empirical size, of the supremum test ...
Timothy Opheim, Anuradha Roy
doaj   +1 more source

How to use χ2 test correctly——the likelihood ratio test and the implementation of SAS software

open access: yesSichuan jingshen weisheng, 2021
The purpose of this article was to introduce the likelihood ratio test and the SAS implementation. Specifically, three definitions of the likelihood ratio test statistics and six more commonly used likelihood ratio test statistics were introduced.
Hu Chunyan, Hu Liangping
doaj   +1 more source

Home - About - Disclaimer - Privacy