Results 11 to 20 of about 159,626 (293)

A Nonparametric Test of the Leverage Hypothesis [PDF]

open access: yesSSRN Electronic Journal, 2012
The so-called leverage hypothesis is that negative shocks to prices/returns aect volatility more than equal positive shocks. Whether this is attributable to changing nancial leverage is still subject to dispute but the terminology is in wide use. There are many tests of the leverage hypothesis using discrete time data.
Oliver Linton   +2 more
openaire   +3 more sources

How to use χ2 test correctly——the likelihood ratio test and the six nonparametric tests of the survival data and the implementation of the SAS software

open access: yesSichuan jingshen weisheng, 2021
The purpose of this article was to introduce the likelihood ratio test, six nonparametric tests, and the SAS implementation of the survival data. Based on the assumption that the survival data had the exponential distribution, the likelihood ratio test ...
Hu Chunyan, Hu Liangping
doaj   +1 more source

Non-Parametric Hypothesis Testing for Unknown Aged Class of Life Distribution Using Real Medical Data

open access: yesAxioms, 2023
Over the last few decades, the statisticians and reliability analysts have looked at putting exponentiality to the test using the Laplace transform technique.
Mahmoud. E. Bakr   +1 more
doaj   +1 more source

Nonparametric Hypothesis Tests for Statistical Dependency [PDF]

open access: yesIEEE Transactions on Signal Processing, 2004
Determining the structure of dependencies among a set of variables is a common task in many signal and image processing applications, including multitarget tracking and computer vision. In this paper, we present an information-theoretic, machine learning approach to problems of this type. We cast this problem as a hypothesis test between factorizations
Alexander T. Ihler   +2 more
openaire   +1 more source

An Entropy-Based Approach for Nonparametrically Testing Simple Probability Distribution Hypotheses

open access: yesEconometrics, 2022
In this paper, we introduce a flexible and widely applicable nonparametric entropy-based testing procedure that can be used to assess the validity of simple hypotheses about a specific parametric population distribution. The testing methodology relies on
Ron Mittelhammer   +2 more
doaj   +1 more source

On the Power of Some Nonparametric Isotropy Tests

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2020
In this paper, properties of nonparametric significance tests verifying the random field isotropy hypothesis are discussed. In particular, the subject of the conducted analysis is the probability of rejecting the null hypothesis when it is true.
Krzysztof Szymoniak-Książek
doaj   +1 more source

Sign, Wilcoxon and Mann-Whitney Tests for Functional Data: An Approach Based on Random Projections

open access: yesMathematics, 2020
Sign, Wilcoxon and Mann-Whitney tests are nonparametric methods in one or two-sample problems. The nonparametric methods are alternatives used for testing hypothesis when the standard methods based on the Gaussianity assumption are not suitable to be ...
Rafael Meléndez   +2 more
doaj   +1 more source

NonpModelCheck: An R Package for Nonparametric Lack-of-Fit Testing and Variable Selection

open access: yesJournal of Statistical Software, 2017
We describe the R package NonpModelCheck for hypothesis testing and variable selection in nonparametric regression. This package implements functions to perform hypothesis testing for the significance of a predictor or a group of predictors in a fully ...
Adriano Zanin Zambom, Michael G. Akritas
doaj   +1 more source

Application of the empirical Bayes approach to nonparametric testing for high-dimensional data

open access: yesLietuvos Matematikos Rinkinys, 2010
In [5] a simple, data-driven and computationally efficient procedure of (nonparametric) testing for high-dimensional data have been introduced. The procedure is based on randomization and resampling, a special sequential data partition procedure, and χ2 ...
Gintautas Jakimauskas   +1 more
doaj   +1 more source

Universal Codes as a Basis for Time Series Testing [PDF]

open access: yes, 2005
We suggest a new approach to hypothesis testing for ergodic and stationary processes. In contrast to standard methods, the suggested approach gives a possibility to make tests, based on any lossless data compression method even if the distribution law of
Astola, Jaakko, Ryabko, Boris
core   +2 more sources

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