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Tutorial: Biostatistics 101: introduction to power and sample size.
November 5, 2012
The NIH Intramural Research Program Protocol Navigation Training Program presents Fiona Callaghan, Ph.D., National Library of Medicine
One of the hardest aspects of study design is determining appropriate power and sample size. Insufficient sampling may result in the inability to disprove the primary hypothesis, wasting time and resources and creating the potential for misleading results. This seminar covers the fundamental concepts underlying classical hypothesis testing and presents examples for analyzing basic one- and two-sample experiments.