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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
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Weak Limit of Sample Range and Midrange For Random Sample Sizes [PDF]
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
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Published correlational effect sizes in social and developmental psychology
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
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Sample size calculation: Basic principles
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
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Concepts in sample size determination
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
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Methodological considerations for the design and implementation of reliable and valid web surveys
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
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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
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Small sample sizes in the study of ontogenetic allometry; implications for palaeobiology [PDF]
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
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Sample Size Determination for Food Sampling
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
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Sample size estimation in research: Necessity or compromise?
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
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