Quick demonstrations for sample size planning with pwr and simr

This repository contains the R scripts and data used in a CLARIN-CH & LiRI workshop on statistical power analysis.

We demonstrate two common approaches to planning sample size:

• An analytic power analysis using pwr (for a repeated-measures ANOVA),
• A simulation-based power analysis using simr (for a linear mixed-effects model),

which are based on an fictional study example.

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Contents

File	Description
ANOVA_pwr_tutorial.R	Analytic example using the pwr package
LMM_simr_tutorial.R	Simulation example using the simr package
LMM_simr_results.RData	Precomputed simulation results to avoid waiting time
slides.pdf	Slides used during the workshop