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An experiment of any kind can have infinitely many variables. A controlled experiment can have just as many, provided that all but one are kept exactly the same.
All variables except one, the experimental variable, are kept constant in an experiment.
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There are three types of variables tested: manipulated variables, controlled variables, and experimental variables.
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An experiment of any kind can have infinitely many variables. A controlled experiment can have just as many, provided that all but one are kept exactly the same.
All variables except one, the experimental variable, are kept constant in an experiment.
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one
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As few as possible.
There are three types of variables tested: manipulated variables, controlled variables, and experimental variables.
A experiment should only have one variable.
Most science experiments will have two independent variables. Fundamentally, an experiment will want as few variables as possible for better results.
one
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