Saturday, December 17, 2011

Control variable in scientific experiment?

i'm doing a science project where we have to compare consumer products. i chose batteries. i've already done my experiment with three different companies and that turned out fine, but in my bar graphs and data, do i need to include a control variable? if so, would it just be no batteries at all? thank you|||This is what I would do:





1) Research on the Internet to find out which battery-producing company has been considered standard / popular / unchallenged / traditional / largest. This company / battery would be the control.





2) The other companies / batteries would be your dependent / independent variables.





Hope this helped.

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