Results 1 to 10 of about 12,763,770 (297)

Tamanho da amostra para avaliação de componentes do rendimento na cultura do feijoeiro Sample size to evaluate some bean agronomic characteristics

open access: yesCiência Rural, 1996
Com base em resultados de experimentos conduzidos nos anos agrícolas de 1991/92 e 1992/93 no Departamento de Fitotecnia da Universidade Federal de Santa Maria com as cultivares de feijoeiro Iraí e Macanudo, calculou-se o tamanho da amostra necessário ...
Valduíno Estefanel   +2 more
doaj   +1 more source

Weak Limit of Sample Range and Midrange For Random Sample Sizes [PDF]

open access: yesThe Egyptian Statistical Journal, 1990
The present work deals with the weak convergence of sample range and midrange when the sample size is a positive integer-valued random variable (r.v.).
H. Barakat, E. Nigm
doaj   +1 more source

Published correlational effect sizes in social and developmental psychology

open access: yesRoyal Society Open Science, 2022
The distribution of effect sizes may offer insights about the research done and reported in a scientific field. We have evaluated 12 412 manually collected correlation effect sizes (Sample 1) and 31 157 computer-extracted correlation effect sizes (Sample
Josefína Weinerová   +2 more
doaj   +1 more source

Sample size calculation: Basic principles

open access: yesIndian Journal of Anaesthesia, 2016
Addressing a sample size is a practical issue that has to be solved during planning and designing stage of the study. The aim of any clinical research is to detect the actual difference between two groups (power) and to provide an estimate of the ...
Sabyasachi Das   +2 more
doaj   +1 more source

Concepts in sample size determination

open access: yesIndian Journal of Dental Research, 2012
Investigators involved in clinical, epidemiological or translational research, have the drive to publish their results so that they can extrapolate their findings to the population.
Umadevi K Rao
doaj   +1 more source

Methodological considerations for the design and implementation of reliable and valid web surveys

open access: yesPublic Health and Toxicology, 2021
This article examines practical epidemiology principles related to the design and implementation of web surveys. Six practice-oriented items are critically examined: 1) The study question; 2) The target population; 3) Study population needed; 4) Sampling
Israel Agaku
doaj   +1 more source

How to choose a sampling technique and determine sample size for research: A simplified guide for researchers

open access: yesOral Oncology Reports
An appropriate sampling technique with the exact determination of sample size involves a very vigorous selection process, which is actually vital for any empirical research.
Sirwan Khalid Ahmed
doaj   +1 more source

Small sample sizes in the study of ontogenetic allometry; implications for palaeobiology [PDF]

open access: yesPeerJ, 2015
Quantitative morphometric analyses, particularly ontogenetic allometry, are common methods used in quantifying shape, and changes therein, in both extinct and extant organisms.
Caleb Marshall Brown, Matthew J. Vavrek
doaj   +2 more sources

Sample Size Determination for Food Sampling

open access: yesJournal of Food Protection, 2023
Industry and public health agencies sample and test food products for various purposes related to food safety and quality. Methods of sample selection and sample size determination are important in designing an optimal sampling plan.
Shizhen S. Wang   +3 more
doaj   +1 more source

Sample size estimation in research: Necessity or compromise?

open access: yesKerala Journal of Psychiatry
An adequately powered sample is essential for accurate parameter estimation and meaningful significance testing. It is important to balance sample size with practical considerations such as cost and feasibility.
Samir Kumar Praharaj, Shahul Ameen
doaj   +1 more source

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