Population | Concepts | The total membership of a defined class of people, objects or events. | A Population is used to describe the total membership of a group of people, objects or events based on characteristics, e.g. time and geographic boundaries. Here are 3 examples – 1. US adult persons on 13 November 1956 2. US computer companies at the end of 2012 3. Universities in the US 1 January 2011. | |