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The effective sample size for multivariate spatial processes with an application to soil contamination

open access: yesNatural Resource Modeling, 2021
Effective sample size accounts for the equivalent number of independent observations contained in a sample of correlated data. This notion has been widely studied in the context of univariate spatial variables.
Ronny Vallejos, Jonathan Acosta
doaj   +1 more source

Reporting Sample Size Calculation in Randomized Clinical Trials Published in 4 Orthodontic Journals [PDF]

open access: yes, 2021
Objective: The purpose of this study was to describe sample size calculations in randomized clinical trials (RCTs) published in 4 orthodontic journals.Methods:This cross-sectional study evaluated 142 RCTs published between 2015 and 2019 in the 4 journals
Carlos Flores-Mir   +6 more
core   +1 more source

Loss functions, utility functions and Bayesian sample size determination. [PDF]

open access: yes, 2011
PhDThis thesis consists of two parts. The purpose of the first part of the research is to obtain Bayesian sample size determination (SSD) using loss or utility function with a linear cost function. A number of researchers have studied the Bayesian SSD
Islam, A. F. M. Saiful
core   +3 more sources

At what sample size do correlations stabilize? [PDF]

open access: yes, 2013
Sample correlations converge to the population value with increasing sample size, but the estimates are often inaccurate in small samples. In this report we use Monte-Carlo simulations to determine the critical sample size from which on the magnitude of ...
Perugini, Marco, Schönbrodt, Felix D.
core   +1 more source

Sample size considerations in research

open access: yesEndodontology, 2023
“What should be the sample size for my study?” is a common question in the minds of every research at some point of the research cycle. Answering this question with confident is tough even for a seasoned researcher.
Shyam Sivasamy
doaj   +1 more source

Determining Sample Size

open access: yesEDIS, 2009
Perhaps the most frequently asked question concerning sampling is "What size sample do I need?" The answer to this question is influenced by a number of factors, including the purpose of the study, population size, the risk of selecting a "bad" sample ...
Glenn D. Israel
doaj   +1 more source

Do Registered Reports Improve Sample Size Planning in Psychology? An exploratory study [PDF]

open access: yes, 2022
openThe paper aims to investigate whether Registered Reports (RRs) published on OSF used a justified sample size.The paper aims to investigate whether Registered Reports (RRs) published on OSF used a justified sample ...
NORSA, REBECCA
core  

Sample size calculation

open access: yesInternational Journal of Ayurveda Research, 2010
Bioactive compounds from marine flora and fauna have extensive past and present use in the treatment of many diseases and serve as compounds of interest both in their natural form and as templates for synthetic modification. Several molecules isolated from various marine organisms (microorganisms, algae, fungi, invertebrates, and vertebrates) are ...
Kadam, Prashant, Bhalerao, Supriya
openaire   +6 more sources

Permutation-based group sequential analyses for cognitive neuroscience

open access: yesNeuroImage, 2023
Cognitive neuroscientists have been grappling with two related experimental design problems. First, the complexity of neuroimaging data (e.g. often hundreds of thousands of correlated measurements) and analysis pipelines demands bespoke, non-parametric ...
John P. Veillette   +2 more
doaj   +1 more source

How Small Is Big: Sample Size and Skewness [PDF]

open access: yes, 2018
Sample sizes of 50 have been cited as sufficient to obtain stable means and standard deviations in normative test data. The influence of skewness on this minimum number, however, has not been evaluated. Normative test data with varying levels of skewness
Piovesana, Adina, Senior, Graeme
core   +1 more source

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