Results 21 to 30 of about 2,957,243 (305)

Genetic association tests in family samples for multi-category phenotypes

open access: yesBMC Genomics, 2021
Background Advancements in statistical methods and sequencing technology have led to numerous novel discoveries in human genetics in the past two decades.
Shuai Wang   +2 more
doaj   +1 more source

Abraham Wald [PDF]

open access: yes, 2005
This paper grew out of a lecture presented at the 54th Session of the International Statistical Institute in Berlin, August 13 - 20, 2003, Schneeweiss (2003).
Schneeweiß, Hans
core   +1 more source

On the Differential Geometry of the Wald Test with Nonlinear Restrictions [PDF]

open access: yesEconometrica, 1996
We exploit the tools of differential geometry to provide a clear explanation for the finite sample lack of invariance of the Wald statistic to algebraically equivalent reformulations of the null hypothesis. The Wald statistic is shown, in general, to be an improper geometric quantity and hence is not invariant to reparametrizations.
Critchley, Frank   +2 more
openaire   +3 more sources

Testing the Equality of Coefficient of Variation in K Inverse Gaussian Populations [PDF]

open access: yesThe Egyptian Statistical Journal, 2002
Three tests (likelihood ratio test, Wald test and Score test) are derived for the hypothesis that the coefficients of variation of k Inverse Gaussian populations are equal. The k samples may be of unequal size.
Amina Saleh, Somia El-Attar
doaj   +1 more source

A Tutorial on Testing the Equality of Standardized Regression Coefficients in Structural Equation Models using Wald Tests with lavaan [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2020
Comparing the effects of two or more explanatory variables on a dependent variable in structural equation models, with either manifest or latent variables, may be hampered by the arbitrary metrics which are common in social sciences and psychology.
Klopp, Eric
doaj   +1 more source

Fixed-b Inference for Testing Structural Change in a Time Series Regression

open access: yesEconometrics, 2016
This paper addresses tests for structural change in a weakly dependent time series regression. The cases of full structural change and partial structural change are considered.
Cheol-Keun Cho, Timothy J. Vogelsang
doaj   +1 more source

Formulating Wald Tests of Nonlinear Restrictions

open access: yesEconometrica, 1985
On montre a partir de l'evidence de Monte Carlo que les differences dans la forme fonctionnelle des restrictions non lineaires sont importantes dans les petites tailles d ...
Gregory, Allan W, Veall, Michael R
openaire   +2 more sources

Gemeindechronik Wald 1918/20

open access: yes, 1921
Mit Beilagen: "Die Freiwilligen" in Wald : eine Institution des Gemeindesekretariates "Pro Juventute" / von O. Binder ; Rechenschaftsbericht über die Verwaltung der Gemeinde Wald vom Jahre 1918. Wald : Buchdruckerei W.

core   +1 more source

On the Uniqueness of Wald Sequential Tests

open access: yesThe Annals of Mathematical Statistics, 1956
Under certain mild restrictions on the distributions involved, it is shown that the probabilities of the two types of error uniquely determine the two bounds characterizing the Wald sequential probability ratio test.
openaire   +2 more sources

Gemeindechronik Wald 1902/17

open access: yes, 1918
Mit Beilagen: Bürgerwehr Wald (Beschluss des Gemeinderats Wald vom 13. August 1914) ; Rechenschafts-Bericht über die Verwaltung der Gemeinde Wald für das Jahr 1917. Wald: Buchdruckerei W.

core   +1 more source

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