Results 31 to 40 of about 15,810,178 (316)

Nonparametric Tests Applicable to High Dimensional Data

open access: yesAustrian Journal of Statistics, 2019
Constructions of data driven ordering of set of multivariate observations are presented. The methods employ also dissimilarity measures. The ranks are used in the construction of test statistics for location problem and in the construction of the ...
Frantisek Rublik
doaj   +1 more source

Multivariate Nonparametric Tests

open access: yesStatistical Science, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Oja, Hannu, Randles, Ronald H.
openaire   +3 more sources

Nonparametric Tests for Treatment Effect Heterogeneity With Duration Outcomes [PDF]

open access: yesJournal of business & economic statistics, 2016
This article proposes different tests for treatment effect heterogeneity when the outcome of interest, typically a duration variable, may be right-censored.
Pedro H. C. Sant’Anna
semanticscholar   +1 more source

Nonparametric Rank Tests for Independence in Opinion Surveys

open access: yesAustrian Journal of Statistics, 2016
Nonparametric rank tests for independence between two characteristics are commonly used in many social opinion surveys. When both characteristics are ordinal in nature, tests based on rank correlations such as those due to Spearman and Kendall are often ...
Philip L.H. Yu, K.F. Lam, Mayer Alvo
doaj   +1 more source

Testing nonparametric shape restrictions [PDF]

open access: yesThe Annals of Statistics, 2023
We describe and examine a test for a general class of shape constraints, such as constraints on the signs of derivatives, U-(S-)shape, symmetry, quasi-convexity, log-convexity, $r$-convexity, among others, in a nonparametric framework using partial sums empirical processes. We show that, after a suitable transformation, its asymptotic distribution is a
Komarova, Tatiana, Hidalgo, Javier
openaire   +4 more sources

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

Trend Analysis of Temperature, Precipitation, and Relative Humidity Changes in Iran [PDF]

open access: yesعلوم و مهندسی آبیاری, 2019
Introduction In the pursuit of detecting the trend and the shift in trend in hydro-meteorological variables, various statistical methods have been developed and used over the years.
Anahita Eblaghian   +3 more
doaj   +1 more source

Nonparametric Clustering of Mixed Data Using Modified Chi-Squared Tests

open access: yesEntropy, 2022
We propose a non-parametric method to cluster mixed data containing both continuous and discrete random variables. The product space of the continuous and discrete sample space is transformed into a new product space based on adaptive quantization on the
Yawen Xu, Xin Gao, Xiaogang Wang
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 ...
Lee, S., Whang, Y.-J.
core   +5 more sources

“Optimum” Nonparametric Tests [PDF]

open access: yes, 1951
The problem of “optimum” tests has two aspects: (1) the choice of a definition of “optimum,” and (2) the mathematical problem of constructing the test. The second problem may be difficult, but at least it is definite once an “optimum” test has been defined. But the definition itself involves a considerable amount of arbitrariness.
openaire   +2 more sources

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