AI-powered
podcast player
Listen to all your favourite podcasts with AI-powered features
Understanding Trial Power and Sample Size in Research Studies
This chapter delves into the significance of trial power in research studies, exploring the challenges of achieving desired power levels due to constraints like budget and time. It discusses the intricacies of sample size determination, the role of the z statistic in determining significance levels, and the difference between standard deviation and standard error in estimating variation. The conversation progresses to analyzing signal-to-noise ratios in trials and denoising standard errors for precise statistical analysis.