Changes

A '''population''' is a group of things or people being studied as a whole.

A '''population''' is a group of [[things]] or [[humans|people]] being studied as a whole.

<ref>A Population is any entire collection of people, animals, plants or things from which we may collect data. [http://www.defra.gov.uk/environment/statistics/statsglossary.htm] </ref>

<ref>A Population is any entire collection of people, animals, plants or things from which we may collect data. [http://www.defra.gov.uk/environment/statistics/statsglossary.htm] </ref>