Yazar "Sezer, Ahmet" için listeleme
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Assessing the Quality of the Natural Cubic Spline Approximation
Sezer, Ahmet (World Scientific Publ Co Pte LTD, 2009)In large samples, central limit and saddle-point approximation theory suggest that spline functions having just two or three knots may be used to approximate the log- likelihood function for a single parameter, with the ... -
Aykırı değer durumunda genelleştirilmiş behrens-fısher problemi için düzeltilmiş testler
Çavuş, Mustafa (Anadolu Üniversitesi, 2016)İkiden fazla anakütlenin ortalamalarının eşitliğinin test edilmesi için gerekli varsayımlar sağlandığında Klasik F-testi yeterince güçlüdür. Anakütle varyansları homojen olmadığında Klasik F-testi bu gücünü kaybetmektedir. ... -
Comparison of confidence intervals for the Behrens-Fisher problem
Sezer, Ahmet; Özkip, Evren; Yazıcı, Berna (Taylor & Francis Inc, 2017)The Behrens-Fisher problem concerns the inferences for the difference between means of two independent normal populations without the assumption of equality of variances. In this article, we compare three approximate ... -
Comparison of spline approximation with the modified likelihoods in the presence of nuisance parameter
Sezer, Ahmet (2010)The likelihood functions from independent studies can be easily combined, and the combined likelihood function serves as a meaningful indication of the support the observed data give to the various parameter values. This ... -
MLR and ANN models of significant wave height on the west coast of India
Asma, Senay; Sezer, Ahmet; Özdemir, Özer (Pergamon-Elsevier Science LTD, 2012)Multiple linear regression (MLR) and artificial neural network (ANN) models are used in the present work to describe the significant wave height off Goa, located in the west Indian coast. A comparison study was carried out ... -
Modelling Extreme Rainfalls Using Generalized Additive Models for Location, Scale and Shape Parameters
Sezer, Ahmet; Kan Kılınç, Betül; Yazıcı, Berna (Corvinus University Budapest, 2016)This study aims to model the nonlinear relationship between the daily amount of extreme rainfall and significant predictor variables by the Generalized additive models for location, scale and shape parameters (GAMLSS). ... -
Modi?ed tests for comparison of group means under heteroskedasticity and non-normality caused by outlier(s)
Çavuşoğlu, Mustafa; Yazıcı, Berna; Sezer, Ahmet (2017)There are several approximate tests proposed such as Welch's F-test (W), the Parametric Bootstrap Test (PB) and Generalized F-test (GF) for comparing several group means under heteroskedasticity. These tests are powerful ... -
Modified generalized p-value and confidence interval by Fisher's fiducial approach
Ozkip, Evren; Yazıcı, Berna; Sezer, Ahmet (Hacettepe University, Fac Sci, 2017)In this study, we develop two simple generalized confidence intervals for the difference between means of two normal populations with heteroscedastic variances which is usually referred to as the Behrens-Fisher problem. ... -
Modified tests for comparison of group means under heteroskedasticity and non-normality caused by outlier(s)
Çavuş, Mustafa; Yazıcı, Berna; Sezer, Ahmet (Hacettepe University, Fac Sci, 2017)There are several approximate tests proposed such as Welch's F-test (W), the Parametric Bootstrap Test (PB) and Generalized F-test (GF) for comparing several group means under heteroskedasticity. These tests are powerful ... -
Multiple Comparison of Age Groups in Bone Mineral Density under Heteroscedasticity
Sezer, Ahmet; Altan, Lale; Özdemir, Özer (Hindawi Publishing Corporation, 2015)Osteoporosis is a silent disease because individuals may not know that they have osteoporosis until their bones become so fragile. Bone mineral density (BMD) test helps to detect osteoporosis and determine the risk fractures. ... -
Statistical Inference Procedure By the Information-Based Test and Its Application in Marine Climatology
Sezer, Ahmet; Asma, Senay; Özdemir, Özer (Corvinus University Budapest, 2018)Objectives of ecological studies should drive all aspects of design. These objectives must include hypothesis testing and appropriate sample size. High level of unexplained variation is typical in many ecological studies ... -
Statistical power of an information-based test and its application to wave height data
Sezer, Ahmet; Asma, Senay (Pergamon-Elsevier Science LTD, 2010)Modeling wave heights is crucial for many maritime applications. An appropriate statistical distribution for describing wave heights is the Rayleigh distribution. Estimating and testing the significance of the parameters ...
