Erişim şekli için "info:eu-repo/semantics/openAccess" Makale Koleksiyonu listeleme
Toplam kayıt 42, listelenen: 21-40
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Measuring the Relative Efficiencies of Statistics Departments in Turkey Using Data Envelopment Analysis
(2015)Bir eğitim sisteminin başarısındaki belirleyici faktörler: eğitim süreci içinde sunulan olanaklar ve eğitim süreci sonrası elde edilen yeterlilikler olabilmektedir. Bununla birlikte, eğitim sistemlerinin performanslarının ... -
Modi?ed tests for comparison of group means under heteroskedasticity and non-normality caused by outlier(s)
(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
(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)
(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
(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. ... -
Near optimal step size and momentum in gradient descent for quadratic functions
(Scientific Technical Research Council Turkey-Tubitak, 2017)Many problems in statistical estimation, classification, and regression can be cast as optimization problems. Gradient descent, which is one of the simplest and easy to implement multivariate optimization techniques, lies ... -
A New Method of Approximation For Fuzzy Membership Function with Application
(2017)In the present study we have formulated a new Maximum Fuzzy Entropy Problem (Max(F)EntP) for fuzzy membership function and proposed sufficient conditions for existence of its solution. Mentioned problem consists of ... -
A New Method of Approxımatıon for Fuzzy Membershıp Functıon with Applıcatıon
(2017)In the present study we have formulated a new Maximum Fuzzy Entropy Problem (Max(F)EntP) for fuzzy membership function and proposed sufficient conditions for existence of its solution. Mentioned problem consists of ... -
Otokorelasyonlu hatalara sahip görünüşte ilişkisiz regresyon denklemlerinin kestirimi
(1998)Görünüşte ilişkisiz regresyon denklemlerine ilişkin hataların hem aynı zamanda ilişkili hemde otokorelasyonlu olduğu durumda parametre tahminlerinde etkinlik kaybını önlemek gerekir. Çalışmada herbir denklemin birinci ... -
Öğrenci başarı notları için robust faktör analizi uygulaması
(2006)Faktör analizi, yaygın kullanılan çok değişkenli bir analiz tekniğidir. Faktör analizinin temelinde varyans-kovaryans matrisi ve korelasyon matrisi hesaplanması aşaması bulunmaktadır. Asal bileşenler analizi, faktör analizi ... -
Performance of Shannon’s Maximum Entropy Distribution Under Some Restrictions: an Application on Turkey’s Annual Temperatures
(2015)İstatistik biliminde entropi oldukça önemli bir yere sahiptir. Son yıllardaki çalışmalarda entropinin neredeyse bilimin her dalında yer aldığı görülebilir. İnformasyon teorisinde, Entropi, rassal bir değişkenin belirsizliğinin ... -
Regresyon analizinde çoklu bağıntı sorununun (multicollinearity) incelenmesi ve uygulanması
(1996)Bir regresyon analizinde araştırmacılar çoklu bağıntı (multicollinearity) sorunu ile çok sık karşılaşmaktadırlar. Açıklayıcı değişkenlerden bir veya birkaçının diğer açıklayıcı değişkenler tarafından iyi açıklandığı zaman, ... -
The Relationship Between Parental Defense Intensity and Nest Site Characteristics in Eurasian Magpie (Pica Pica L.) - an Assessment With the Classification Methods
(Corvinus University Budapest, 2017)Nest defense behavior varies among species and depends on different factors. However little is known of the influence of urbanization and nest characteristics on the nest defense intensity as parental investment of the ... -
Reliability and validity of Turkish version of the impact on family scale: Assessment of depressive symptoms and quality of life in mothers with cerebral palsied children
(2009)The pragmatic aims of this study were to investigate the reliability and validity of the Turkish version of the Impact on Family Scale (IFS) and to evaluate the impact of having disabled children on mothers. Two hundred ... -
Robust factorial ANCOVA with LTS error distributions
(Hacettepe University, Fac Sci, 2018)In this study, parameter estimation and hypotheses testing in the balanced factorial analysis of covariance (ANCOVA) model, when the distribution of error terms is long-tailed symmetric (LTS) are considered. The unknown ... -
Statistical Inference Procedure By the Information-Based Test and Its Application in Marine Climatology
(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 ... -
A Study on Estimation of Wind Speed Distribution by Using the Modified Weibull Distribution
(2016)The knowledge of the probability density function of wind speed is key information for the determination of wind energy potential of the specified region. In the literature, the Weibull distribution is a widely-used and ... -
Survival Data Analysis by Minminxent and Maxminxent Methods
(2017)Objective: Entropy Optimization Methods (EOM) have important applications, especially in statistics, economy, engineering, survival data analysis and etc. There are several examples in the literature that known statistical ... -
Temel İstatistik Eğitiminde R For Wındows Paket Programı Kullanımı
(2005)Türkiye’de 20 Üniversitede İstatistik eğitim programı bulunmaktadır. Öğrenciler eğitimin ilk yılında istatistiğin temel kavram ve teoremlerini öğrenmektedir. Bu temel kavram ve teoremlerin daha anlaşılır ve görsel algılamaya ... -
Türkiye'de illere göre iç göç hareketlerinin modern kümeleme teknikleri ile incelenmesi
(2007)Türkiye’de özellikle büyük sehirlere dogru bir göç yasanmaktadır. Fakat son yıllarda büyüksehir belediyeleri, köylerine ya da kasabalarına geri dönmek isteyenlere çesitli kolaylıklar saglamaktadır. Bu çalısmada iç göç ...