Browsing İstatistik Bölümü Makale Koleksiyonu by Issue Date
Now showing items 61-80 of 85
-
On The Use Of Imputation Methods For Missing Data In Estimation Of Population Mean Under Two-Phase Sampling Design
(Hacettepe Univ, Fac Sci, 2018)Non-response is an unavoidable feature in sample surveys and it needs to be carefully handled to avoid the biased estimates of population characteristics/parameters. Imputation is one of the latest fascinating methods which ... -
Almost Unbiased Estimation Procedures Of Population Mean In Two-Occasion Successive Sampling
(Hacettepe Univ, Fac Sci, 2018)The objective of this paper is to construct some unbiased estimators of the current population mean in two-occasion successive sampling. Utilizing the readily available information on an auxiliary variable on both occasions, ... -
Harm Perceptions Of Waterpipe Tobacco Smoking Among University Students In Five Eastern Mediterranean Region Countries: A Cross-Sectional Study
(2018)INTRODUCTION Waterpipe tobacco smoking (WTS) continues to be very common in the Eastern Mediterranean Region (EMR), partially because of cultural acceptance but also because of misconceptions of its harm. This paper aimed ... -
Solving Large Scale Systems Of Linear Equations With A Stabilized Lanczos-Type Algorithms Running On A Cloud Computing Platform
(Hacettepe Univ, Fac Sci, 2018)The Lanczos-type algorithms for Systems of Linear Equations (SLEs) are efficient but fragile. A number of ways to resolve this issue have been suggested. But, the problem is still not fully sorted, in our view. Here, we ... -
Hybrid Constrained Evolutionary Algorithm For Numerical Optimization Problems
(2019)Constrained optimization are naturally arises in many real-life applications, and is therefore gaining a constantly growing attention of the researchers. Evolutionary algorithms are not directly applied on constrained ... -
The Extended Odd Weibull-G Family: Properties And Applications
(2019)The Weibull distribution is one of the most popular and widely used model for failure time in life-testing and reliability theory. In this study, we introduce a new class of continuous distributions called the extended odd ... -
The Comparative Analysis Of Urban Transport In Ankara By Gender And Age Groups
(2019)Today travel time by urban transport has varied as a result of developing urban facilities, land use pattern, development of transport infrastructure and alternative transport system options for communities. Different ... -
A New Uniform Distribution With Bathtub-Shaped Failure Rate With Simulation And Application
(2019)Bathtub failure rate shape is widely used in industrial and medical applications. In this paper, a three-parameter lifetime distribution, so-called the generalized Weibull uniform distribution that extends the Weibull ... -
Determinants Of Electricity Consumption Based On The Nuts 2 Regions Of Turkey: A Panel Data Approach
(2019)Previous studies have focused on the relationship in recent years between electricity consumption and socio-economic indicators, but little attention has been paid to regional differences in Turkey. This study determines ... -
Weighted Standard Deviation Method For (X)Over-Bar And S Control Charts
(2019)A Shewhart chart based on normality assumption is not appropriate for skewed distributions since its Type-I error rate is inflated. This study presents (X) over bar and S control charts for monitoring the process variability ... -
A Regression Type Estimator For Mean Estimation Under Ranked Set Sampling Alongside The Sensitivity Issue
(2019)Koyuncu and Kadilar [7] introduced a family of estimators under simple random sampling. In this article; we adapt these estimators for ranked set sampling. Further, we suggest a regression-type estimator of population mean ... -
Does Tooth Loss In The Mandibular Posterior Region Have An Effect On The Mental Index And Panoramic Mandibular Index?
(2019)Purpose: Mental index (MI) and panoramic mandibular index (PMI) are important radiomorphometric indices used for assessing the quality of the mandibular bone. The aim of this study was to investigate the possible effect ... -
A New Generalized Weighted Weibull Distribution
(2019)In this article, we present a new generalization of weighted Weibull distribution using Topp Leone family of distributions. We have studied some statistical properties of the proposed distribution including quantile function, ... -
On Gamma Inverse Weibull Distribution
(2019)The inverse Weibull distribution which was first introduced to investigate the decay of mechanical components is widely used in the field of biology, especially in the areas of survival and reliability analysis. In this ... -
Homogeneous Imputation Under Two Phase Probability Proportional To Size Sampling
(2019)In this paper, we consider the problem of missing complete at random (MCAR) values in two phase probability proportional to size (pps) sampling for the estimation of population mean. A class of estimators is considered by ... -
A Data Science Study For Determining Food Quality: An Application To Wine
(2019)In this paper, wine quality is investigated based on physicochemical ingredients which include fixed acidity, volatile acidity, citric acid, residual sugar, chloride, free sulfur dioxide, total sulfur dioxide, density, pH, ...