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28 January, 03:16

Dave recorded the effects of staying up late on his energy level. which of these is a control variable?

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  1. 28 January, 03:39
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    I think the correct answer would be the variable staying up late, it is the control variable in this situation. The control variable is a factor or variable in an experiment that is remained constant or the same all through out the course of the experiment. It is also known as the scientific constant.
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