منابع مشابه
What about N? A methodological study of sample-size reporting in focus group studies
BACKGROUND Focus group studies are increasingly published in health related journals, but we know little about how researchers use this method, particularly how they determine the number of focus groups to conduct. The methodological literature commonly advises researchers to follow principles of data saturation, although practical advise on how to do this is lacking. Our objectives were firstl...
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Clustering is an important data exploration task. A prominent clustering algorithm is agglomerative hierarchical clustering. Roughly, in each iteration, it merges the closest pair of clusters. It was rst proposed way back in 1951, and since then there have been numerous mod-iications. Some of its good features are: a natural, simple, and non-parametric grouping of similar objects which is capab...
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15 صفحه اولWhat is the importance of calculating sample size?
1. Divisão de Pneumologia, Instituto do Coração – InCor – Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brasil. 2. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA. 3. Methods in Epidemiologic, Clinical and Operations Research–MECOR–program, American Thoracic Society/Asociación Latinoamerica...
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ژورنال
عنوان ژورنال: The Forestry Chronicle
سال: 1956
ISSN: 0015-7546,1499-9315
DOI: 10.5558/tfc32075-1