Results 11 to 20 of about 397,778 (284)

The Total Operating Characteristic from Stratified Random Sampling with an Application to Flood Mapping

open access: yesRemote Sensing, 2021
The Total Operating Characteristic (TOC) measures how the ranks of an index variable distinguish between presence and absence in a binary reference variable.
Zhen Liu, Robert Gilmore Pontius Jr
doaj   +3 more sources

Sampling design for compliance monitoring of surface water quality: A case study in a Polder area [PDF]

open access: yes, 2008
International agreements such as the EU Water Framework Directive (WFD) ask for efficient sampling methods for monitoring natural resources. In this paper a general methodology for designing efficient, statistically sound monitoring schemes is described.
Brus, D.J., Knotters, M.
core   +5 more sources

An Inverse-Occurrence Sampling Approach for Urban Flood Susceptibility Mapping

open access: yesRemote Sensing, 2023
Data-driven flood susceptibility modeling is an efficient way to map the spatial distribution of flood likelihood. The quality of the flood susceptibility model relies on the learning technique and the data used for learning.
Changpeng Wang   +5 more
doaj   +1 more source

Determination of Sample Size and Observation Units

open access: yesInternational Journal of Assessment Tools in Education, 2019
The purpose of this study was to write programsto define sampling sizes and observation units by probability sampling methodsand to provide an idea for software developers. Thealgorithms of the programs were written in Python 3.
Tülin Acar
doaj   +1 more source

Variance Estimation in the Presence of Measurement Errors Under Stratified Random Sampling

open access: yesRevstat Statistical Journal, 2021
This study focuses on the estimation of population variance of study variable in stratified random sampling using auxiliary information when the observations are contaminated by measurement errors.
Neha Singh   +2 more
doaj   +1 more source

A Family of Ratio Estimators in Stratified Random Sampling Utilizing Auxiliary Attribute Along Side the Nonresponse Issue

open access: yesJournal of Statistical Theory and Applications (JSTA), 2019
This article proposes some estimators based on an adaptation of the estimators developed by Bahl and Tuteja [1], Diana [2], Koyuncu and Kadilar [3], Koyuncu and Kadilar [4], Shabbir and Gupta [5], and Koyuncu [6] utilizing available supplementry ...
Usman Shahzad   +3 more
doaj   +1 more source

Application of AHP and a mathematical index to estimate livability in tourist districts: The case of Al Qasba in Sharjah

open access: yesFrontiers of Architectural Research, 2020
Urban planners must ensure that urban public spaces are enjoyable to use to create a lively city that expresses their culture and traditions and welcomes social diversity. This study aims to develop a theoretical index for assessing the livability levels
Emad Mushtaha   +5 more
doaj   +1 more source

Sampling of cashew nuts as an aid to research for the genetic improvement of cashew tree [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2019
: The objective of this work was to estimate sample sizes of cashew (Anacardium occidentale) nuts as an aid to the genetic improvement of cashew tree. Nuts were separated by size: nuts < 17 mm were classified as size 1 (S1); 17 mm ≤ nuts < 19 mm, size 2 (
Adroaldo Guimarães Rossetti   +2 more
doaj   +1 more source

Resolving the Raven Paradox: Simple Random Sampling, Stratified Random Sampling, and Inference to the Best Explanation [PDF]

open access: yes, 2021
Simple random sampling resolutions of the raven paradox relevantly diverge from scientific practice. We develop a stratified random sampling model, yielding a better fit and apparently rehabilitating simple random sampling as a legitimate idealization.
Ward, Barry
core   +1 more source

MEMPERKIRAKAN RATA-RATA DAN TOTAL PEMAKAIAN PULSA DENGAN METODE STRATIFIED RANDOM SAMPLING

open access: yesJurnal Diferensial, 2020
Sampling acak berlapis adalah teknik pengambilan data dengan mengelompokkan data sesuai karateristik yang ada karena populasi yang heterogen. Penelitian ini dilakukan untuk menentukan interval rata-rata dan total biaya penggunaan pulsa per bulan untuk ...
Fransiskus J Obenu
doaj   +1 more source

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