What is Control variable?
{{Orphan|date=March 2012}} A '''control variable''' is something in an [[experiment]] that is kept the same. Having control variables means that the experiment will be a [[wikt:fair|fair]] test. The Control Variable is often used with the [[Independent variable|independent]] and [[dependant variable|dependent variable]]s.<ref>{{Cite web |url= http://www.sciencebuddies.org/science-fair-projects/project_experiment_fair_test.shtml |title=Doing a Fair Test: Variables for Beginners |work=sciencebuddies.org |access-date=20 January 2011 }}</ref> ==References== {{reflist}} {{science-stub}} [[Category:Science]]