Translations:Growth/Personalized first day/Newcomer homepage/Measurement and experiment plan/18/en

In order to understand the Homepage’s impact on editor activation and retention, we propose an experiment that will be running for at least six months. During that time, 50% of new registrations on target wikis (currently Czech, Korean, Vietnamese, and Arabic) will have the homepage enabled by default, and 50% will have it disabled. We will most likely be running other experiments on the target wikis at the same time (e.g. variants of our Help Panel). If those experiments require stratified sampling, we will make sure to adjust our sampling strategies as necessary.