What report compares metrics based on user acquisition date over a series of weeks?

A cohort is a group of users who share a common characteristic that is identified in this report by an Analytics dimension. For example, all users with the same Acquisition Date belong to the same cohort. The Cohort Analysis report lets you isolate and analyze cohort behavior. Cohort analysis helps you understand the behavior of component groups of users apart from your user population as a whole. Tip: Organize users into groups based on shared characteristics like Acquisition Date, and then examine the behavior of those groups according to metrics like User Retention or Revenue.