Simulation-based Sample Size Calculations for Mixed Models

Determining appropriate sample sizes for experiments can be a challenge, especially when the anticipated statistical analysis includes mixed models. In this hands-on workshop, we will discuss the goals of sample size and power calculations and how they can be used, as well as ways to simulate sample sizes in R. This method allows for understanding the effect of sample sizes at each level of a mixed model, and how they affect power. Examples of simulation for mixed models will be done in the simr R package.