Monday, December 12, 2011

What is the dependent variable and control in this experiment?

The experiment is comparing 3 different light bulbs. G.E. brand, Philips brand and a generic brand. What would the dependent variable and control be?|||The dependent variable would depend on what you are testing for. In your case that is life of the bulb.





There are a couple of ways you could establish the control. One would be to have it be the generic bulb or any of the other bulbs. Just pick one and call it the control. The other would be to have it be the mean of the three bulbs and have the measured parameter be the deviation of each bulb from the mean of the three bulbs.|||I would say there is no dependent variable or control in this experiment.





Or it could depend on what question the experiment is trying to answer. If the question how much longer (or shorter) do name brand light bulbs last, than generic brand? Then the control would be the generic, and the 2 name brand would be dependent variables.





each light bulb could be considered the control.|||The control is definitely the generic bulb, the dependant variable depends on what your testing them for.. so it's a bit harder to tell. Maybe with more information it would be easier. Is that the whole question? Sorry I can't help you more.|||control g.b. dependent, g.e. and p.b

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