A group of individuals or items that share one or more characteristics from which data can be gathered and analyzed.
Related information about population:
- Population - Wikipedia, the free encyclopedia
 A population is all the organisms that both belong to the same group or species   and live in the same geographical area. In ecology the population of a certain ...
 
- List of countries by population - Wikipedia, the free encyclopedia
 This is a list of countries by population. The list includes independent countries   and inhabited dependent territories based on the ISO standard ISO 3166-1.
 
- Statistical population - Wikipedia, the free encyclopedia
 A statistical population is a set of entities concerning which statistical inferences   are to be drawn, often based on a random sample taken from the population.
 
- U.S. & World Population Clocks
 May 31, 2012 ... Up to the minute U.S. and World population estimates with details on calculations  .
 
- Population - The 2012 Statistical Abstract - U.S. Census Bureau
 Jun 27, 2012 ... 52 - Population by Selected Ancestry Group and Region: 2009 [Excel 49k] | [PDF   70k] ... Elderly, Racial and Hispanic Origin Population Profiles ...
 
- Home - Population Reference Bureau
 The Population Reference Bureau provides timely and objective information on   U.S. and international population trends and their implications.
 
- United Nations Population Division Home Page
 Wall chart on World Population Ageing and Development 2012 (Wall chart) ...   2012/1, April 2012 - Population ageing and the Non-communicable Diseases ...
 
- Population Connection
 Improving Access to a Basic Human Right The United Nations Population Fund   says family planning is a human right, while two groups of doctors support better ...