منابع مشابه
Sample Size and Tests of Measurement Invariance
Measurement equivalence/invariance (ME/I) can be thought of as operations yielding measures of the same attribute under different conditions (Horn & McArdle, 1992). These different conditions include stability of measurement over time (Golembiewski, Billingsley, & Yeager, 1975), across different populations (e.g., cultures; Riordan & Vandenberg, 1994), different mediums of measurement administr...
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The influence of sample size on the magnitude and variability of soil denitrification was studied by collecting soil cores, ranging in size from 1.7 to 5.4 cm in diameter, from no-till and conventionaltill corn plots. Estimates of natural denitrification rates were obtained by incubating intact soil cores with C2H2 and monitoring gaseous N2O production. In addition, maximum denitrification pote...
متن کاملA power analysis for fidelity measurement sample size determination.
The importance of assessing fidelity has been emphasized recently with increasingly sophisticated definitions, assessment procedures, and integration of fidelity data into analyses of outcomes. Fidelity is often measured through observation and coding of instructional sessions either live or by video. However, little guidance has been provided about how to determine the number of observations n...
متن کاملSample size estimation in epidemiologic studies
This review basically provided a conceptual framework for sample size calculation in epidemiologic studies with various designs and outcomes. The formula requirement of sample size was drawn based on statistical principles for both descriptive and comparative studies. The required sample size was estimated and presented graphically with different effect sizes and power of statistical test at 95...
متن کاملSample size determination for logistic regression
The problem of sample size estimation is important in medical applications, especially in cases of expensive measurements of immune biomarkers. This paper describes the problem of logistic regression analysis with the sample size determination algorithms, namely the methods of univariate statistics, logistics regression, cross-validation and Bayesian inference. The authors, treating the regr...
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ژورنال
عنوان ژورنال: Global Journal Of Emerging Sciences
سال: 2020
ISSN: 2682-7662
DOI: 10.37187/gjoes.0620.0202.02