SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In a controlled experiment, how many independent variables can be worked with at a time?
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one
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two or more
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however many makes sense
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None of the above
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Explanation:
Detailed explanation-1: -Yes, an experiment should test only one variable at a time. This ensures that the experimental outcome is clearly due to one identifiable factor.
Detailed explanation-2: -To ensure the internal validity of an experiment, you should only change one independent variable at a time.
Detailed explanation-3: -Researchers often include multiple independent variables in their experiments. The most common approach is the factorial design, in which each level of one independent variable is combined with each level of the others to create all possible conditions.
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