The purpose of this tutorial is to provide brief introduction to conducting design-based analysis of complex sample survey data using the `survey` package in `R`. We will be using data from the ...

This repository is out of date and is no longer maintained. Please see the Rails Tutorial Help page for the most up-to-date version. This is the sample application ...

Pilot trials have a key role in preparing for definitive randomized trials, yet determining their sample size remains a common challenge. This article provides practical guidance, methods, and ...

When planning experimental research, determining an appropriate sample size and using suitable statistical models are crucial for robust and informative results. The recent replication crisis ...