Goodness-of-fit tests and outlier detection

Goodness-of-fit tests for multivariate distributions Sürücü, Barış (Informa UK Limited, 2006-01-01) We propose three new statistics, Z(p), C-p, and R-p for testing a p-variate (p >= 2) normal distribution and compare them with the prominent test statistics. We show that C-p is overall most powerful and is effective against skew, long-tailed as well as short-tailed symmetric alternatives. We show that Z(p) and R-p are most powerful against skew and long-tailed alternatives, respectively. The Z(p) and R-p statistics can also be used for testing an assumed p-variate nonnormal distribution.
Score test for testing etiologic heterogeneity in two-stage polytomous logistic regression Karagülle, Saygın; Kalaylıoğlu Akyıldız, Zeynep Işıl; Department of Statistics (2013) Two-stage polytomous logistic regression was proposed by Chatterjee (2004) as an effective tool to analyze epidemiological data when disease subtype information is available. In this modeling approach, a classic logistic regression is employed in the first level of the model. In the second level, the first-stage regression parameters are modeled as a function of some contrast parameters in a somehow similar spirit of an ANOVA model. This modeling also enables a practical way of estimating the heterogeneity ...
Estimation techniques for a class of non-regular distributions: the weibull case Zenbil, El-Bashir A; Yıldırım, Fetih; Department of Statistics (1991)
Structural Identification Analytical Aspects Aktan, Emin; Necati, Çatbaş; Türer, Ahmet; Zongfen, Zhang (1998-07-01) Analytical aspects of structural identification are discussed considering different types of models, different model calibration spaces, and different types and amounts of experimental information. Three-dimensional finite element models and 2D grid models of an operating highway bridge are developed. The models were calibrated by taking advantage of an extensive database of experimental information accumulated from the bridge. Different types of models of varying sizes permit comparison of automated optimi...
Testing Practices and Attitudes Toward Tests and Testing: An International Survey Evers, Arne; et. al. (2017-01-01) On behalf of the International Test Commission and the European Federation of Psychologists' Associations a world-wide survey on the opinions of professional psychologists on testing practices was carried out. The main objective of this study was to collect data for a better understanding of the state of psychological testing worldwide. These data could guide the actions and measures taken by ITC, EFPA, and other stakeholders. A questionnaire was administered to 20,467 professional psychologists from 29 cou...

Citation Formats

B. Sürücü, “Goodness-of-fit tests and outlier detection,” Ph.D. - Doctoral Program, Middle East Technical University, 2003.